Chinese Language Databases Research Articles

Efficacy of traditional chinese medicine in the treatment of rash caused by epidermal growth factor receptor inhibitors: A frequency statistics and meta-analysis

Objective: The aim of this study is to evaluate the efficacy of Traditional Chinese Medicine (TCM) in the treatment of rash caused by epidermal growth factor receptor inhibitors (EGFRIs). Materials and Methods: Foreign language database (such as PubMed, Web of Science, Cochrane Library, EMBASE) and Chinese language database (such as China National Knowledge Infrastructure, VIP Database for Chinese Technical Periodicals [VIP], Wangfang, CBM disc) were searched for all trials of TCM in the treatment of rash caused by EGFRIs until January of 2019. We also looked through the references of relevant studies to supplement additional trials. The SPSS 25.0 was used for statistics of TCM with high frequency, and Review Manager 5.3 was used for meta-analysis. Results: A total of 22 studies were included in the study. We selected TCM whose frequency were >3.0%. They were Lonicera japonica(金银花), Licorice Roots Northwest Origin(生甘草), Cortex Dictamni(白鲜皮), Radix Sophorae Flavescentis(苦参), Schizonepeta(荆芥), Saposhnikovia Divaricate(防风). The meta-analysis revealed that the efficacy of TCM in treating EGFRIs-related rash was better than that of Western medicine or none. Conclusions: TCM could significantly relieve rash caused by EGFRIs, which is worth popularizing. Moreover, the mechanism deserves to be further explored.

Sex differences in the awareness, treatment, and control of hypertension in China: a systematic review with meta-analyses.

Hypertension is the major cause of preventable disease burden in China. However, limited evidence is available on sex differences in the awareness, treatment, and control of hypertension. We assessed sex differences in the awareness, treatment, and control of hypertension in China. A systematic search of four English language and four Chinese-language databases was conducted to identify studies conducted from 2005 that reported sex-specific data on the awareness, treatment, and control of hypertension in China. Random-effects meta-analysis weighted by the inverse of the variances were used to obtain pooled sex-specific rates and women-minus-men differences, and their 95% confidence intervals (CI). Overall, 57 studies comprising 2,155,829 individuals (55% women) were included. Awareness (53% in women vs. 47% in men), treatment among all (44% vs. 38%), treatment among aware (65% vs. 60%), control among all (17% vs. 14%), and control among treated (27% vs. 27%) were low for both sexes, but more favourable in women than men. The corresponding women-minus men difference was 7% (95% CI: 6; 8%) for awareness, 6% (5; 8%) for treatment among all, 6% (2; 9%) for treatment among aware, 3% (2; 3%) for control among all, and 0% (-2; 1%) for control among treated. Awareness, treatment, and control of hypertension in China is low in both sexes, but greater in women than men. Sex-specific interventions may be needed to efficiently combat the burden of hypertension.

Cost Effectiveness of Bosentan for Pulmonary Arterial Hypertension: A Systematic Review.

Objectives Although many studies have reported on the cost-effectiveness of bosentan for treating pulmonary arterial hypertension (PAH), a systematic review of economic evaluations of bosentan is currently lacking. Objective evaluation of current pharmacoeconomic evidence can assist decision makers in determining the appropriate place in therapy of a new medication. Methods Systematic literature searches were conducted in English-language databases (MEDLINE, EMBASE, EconLit databases, and the Cochrane Library) and Chinese-language databases (China National Knowledge Infrastructure, WanFang Data, and Chongqing VIP) to identify studies assessing the cost-effectiveness of bosentan for PAH treatments. Results A total of 8 published studies were selected for inclusion. Among them were two studies comparing bosentan with epoprostenol and treprostinil. Both results indicated that bosentan was more cost-effective than epoprostenol, while the results of bosentan and treprostinil were not consistent. Four studies compared bosentan with other endothelin receptor antagonists, which indicated ambrisentan might be the drug of choice for its economic advantages and improved safety profile. Only two economic evaluations provided data to compare bosentan versus sildenafil, and the results favored the use of sildenafil in PAH patients. Four studies compared bosentan with conventional, supportive, or palliative therapy, and whether bosentan was cost-effective was uncertain. Conclusions Bosentan may represent a more cost-effective option compared with epoprostenol and conventional or palliative therapy. There was unanimous agreement that bosentan was not a cost-effective front-line therapy compared with sildenafil and other endothelin receptor antagonists. However, high-quality cost-effectiveness analyses that utilize long-term follow-up data and have no conflicts of interest are still needed.

Systematic review and meta-analysis of the protective effect of resveratrol on multiple organ injury induced by sepsis in animal models.

Sepsis may directly lead to multiple organ failure, which is among the leading causes of mortality in critically ill patients. According to data released by the Global Sepsis Alliance, the number of mortalities due to sepsis exceeded the combined number for prostate cancer, breast cancer and AIDS in 2012. To date, studies have reported that resveratrol has marked positive effects including anti-inflammatory, anti-oxidative and pro-microcirculatory functions in sepsis-induced organ injury, significantly improving the survival time and mortality of sepsis animals. The present systematic review sought to further clarify the efficacy and safety of resveratrol in the treatment of sepsis. Studies on resveratrol application in the treatment of sepsis-induced organ injury in animal models were reviewed by searching various Chinese and other language databases (PubMed, Embase, CNKI, WanFang and WeiPu) and by manually searching the references of related articles. The selection and evaluation of the studies was performed by two independent reviewers. A total of 260 related studies were initially identified. Following application of the exclusion factors and inclusion criteria, 11 studies were included. Meta-analysis revealed that resveratrol exerted significant protective effect in sepsis-induced animal models of organ injury, through anti-inflammatory, anti-oxidant and pro-microcirculatory functions compared with in the placebo group. While nuclear factor κB (NF-κB) and nuclear factor E2-related factor 2 (NRF-2) are the two major signaling pathways to have been associated with the anti-inflammatory and anti-oxidative effects of resveratrol, these factors were not quantified for mean values, therefore not suitable for systematic evaluation. For related factors, the results of meta-analysis were as follows: For tumor necrosis factor-α (TNF-α), the standardized mean difference (SMD) was -13.50 [95% confidence interval (CI): -22.08, -4.91; P=0.002]; for malondialdehyde (MDA), the SMD was -3.10 (95% CI: -5.27, -0.93; P=0.005); for mean arterial pressure the SMD was 1.34 (95% CI: 0.07, 2.62; P=0.04); for interleukin (IL)-6 the SMD was -9.57 (95% CI: -20.90, 1.75; P=0.10); and for IL-10 the SMD was 0.80 (95% CI: -0.73, 2.34; P=0.31). It was concluded that resveratrol exerted significant anti-inflammatory and anti-oxidative effects through NF-κB and NRF-2 signaling pathways in animal models of sepsis-induced multiple organ injury, manifesting as significant downregulation of TNF-α and MDA expression and improved microcirculation, therefore ameliorating septic damage to the body, which may ultimately improve survival ratios.

Integrating emergency risk communication (ERC) into the public health system response: Systematic review of literature to aid formulation of the 2017 WHO Guideline for ERC policy and practice.

The World Health Organization (WHO) commissioned a systematic review of literature to facilitate evidence syntheses for the development of emergency risk communication (ERC) guidelines for its member states. The goal of this review was to integrate ERC best practices into governmental and non-governmental health systems for all emergencies of public health concern, by addressing three questions: (1) to identify best practices for the integration of ERC into national and international public health preparedness; (2) to identify mechanisms to establish effective intra-agency, inter-agency, and/or cross-jurisdictional information sharing; and (3) to identify methods to coordinate risk communication activities between responding agencies across organizations and levels of response. The review covered scientific and grey literature publications between January 2003 and February 2016, and searches were conducted in 17 English language electronic libraries besides Chinese, Portuguese and Spanish language databases. A mixed deductive-inductive process was used to synthesize findings across studies through identifying thematic areas. While 8,215 articles were initially retrieved, after a sequential screening process, the final evidence syntheses comprised of 21 articles for question (1) and 24 for questions (2) and (3) combined (due to overlap of themes). The confidence in findings was assessed by the Qualitative Evidence Syntheses (GRADE-CERQual) tool. PRISMA guidelines were followed to the extent possible given the limitations inherent to a review largely based on qualitative studies. The identified literature was very context-specific and referred to mechanisms, practices from the field, and recommendations that were derived from planning or response efforts implemented at the national or local levels in specific countries. Integration of ERC functions into public health emergency preparedness, planning and response activities was influenced by reforming components of the leadership structure when needed, modifying organizational factors, and nullifying restrictions (including amending laws/ regulations) that might have been an obstacle to the timely release of information. Exercises and trainings were recognized as effective strategies to identify the barriers and successes in this process of integration. Key elements to enhance information sharing and coordination across organizations included the creation of networks, task-forces and committees across disciplines, organizations and geographic areas. Engagement of local stakeholders was also important to guarantee the flow of information up and down the incident command system. On the whole, few empirical studies, especially from low- and middle-income countries, related to the WHO research questions, demonstrating the need for research in these areas. To facilitate an accurate identification of the gaps, the authors suggest integrating current findings with case studies across the WHO regions to better understand the specific evidence that is needed in practice across the multitude of ERC functions.

Efficacy of the Oriental herbal medicine, Jie Yu Dan, for alleviating post-stroke aphasia: A Systematic Review and meta-analysis of randomized clinical trials

IntroductionJie Yu Dan(JYD), a traditional Chinese medicine, is used to promote circulation and has been used for people experiencing speech and language difficulties with post-stroke aphasia. The objectives of this study were to systematically evaluate randomized clinical trials (RCTs) to assess the efficacy of JYD for improving post-stroke aphasia. MethodsAll RCTs that studied JYD treatment in post-stroke aphasia were selected from English, Korean and Chinese language databases until February 2018. Studies of participants with post-stroke aphasia were divided into 2 groups that had common treatments with JYD and placebo or Western medicine, respectively. Risk ratio and mean differences with 95% confidence intervals (CI) were calculated for the pooled RCTs with a fixed or random model in the meta-analysis. Since the RCTs had some heterogeneity in JYD prescriptions, duration of the therapy and the control group, some subgroup analysis was conducted. Risk of bias and publication bias was assessed for all included RCTs. ResultsThe JYD with conventional therapy (n = 439) additionally improved the overall efficacy of post-stroke aphasia by 1.34 fold in comparison to the conventional therapy (n = 370) in the fixed effect model including 10 RCTs(P < 0.00001). JYD plus conventional therapy (n = 374) was more effective for improving aphasia by 4.88 fold (95% CI = 2.87–6.78) than the conventional therapy (n = 307) as a control group in pooling 8 RCTs(P < 0.00001). There were no differences in JYD efficacy according to treatment duration and original and modified JYD treatments in subgroup analysis. No adverse effects were observed in any of the studies. All 10 studies used an appropriate method for randomization of the subjects but about 25% did not include allocation concealment and blinding of patients and practitioners. The 10 studies included had low to moderate risk of bias. There was no significant publication bias in the meta-analysis. ConclusionsJYD might improve the efficacy of conventional therapy and/or acupuncture for treating post-stroke aphasia considering the quality of RCTs included. However, larger and highly controlled RCTs are needed to confirm the results.

Rs4938723 Polymorphism Is Associated with Susceptibility to Hepatocellular Carcinoma Risk and Is a Protective Factor in Leukemia, Colorectal, and Esophageal Cancer.

BackgroundGrowing evidence indicates that a non-coding RNA named miR-34b/c plays crucial roles in carcinogenesis, and its common polymorphism, pri-miR-34b/c rs4938723, also participates in this process and is associated with cancer susceptibility. However, this association was previously undefined and ambiguous. Therefore, we carried out an updated analysis to evaluate this relationship between rs4938723 polymorphism and cancer susceptibility.Material/MethodsPubMed, EMbase, Web of Science and Chinese language (WanFang, CNKI and VIP) databases were searched for relevant studies until Sep 10, 2018. Odds ratios and 95% confidence interval were applied to assess this relationship.ResultsThirty case-control studies were retrieved. No positive association was found in either the overall study population or in the subgroups, based on ethnicity, source of group, sex, smoking, and drinking status. The main results were observed in the stratified analysis subgroups in cancer type subgroup: rs4938723 polymorphism may be a protective factor in leukemia, colorectal cancer, and esophageal cancer; however, C-allele was a risk factor in carriers for hepatocellular carcinoma. Last but not the least, poor positive results were discovered in the age subgroup.ConclusionsCurrent meta-analysis suggested that rs4938723 polymorphism was potentially associated with hepatocellular carcinoma risk, but this polymorphism had a decreased association for susceptibility to esophageal cancer, leukemia, and colorectal cancer. Furthermore, studies with larger sample sizes and including gene-gene or gene-environment interactions should be carried out to elucidate the role of rs4938723 polymorphism in cancer risk.

PRM56 - The Impact of Omitting Chinese Language Databases from Systematic Literature Reviews and Meta-Analyses with Global Perspectives

To investigate the impact of omitting Chinese-language databases from systematic literature reviews (SLRs) on the results of subsequent meta-analyses. This research will inform the feasibility and effect on quality of including Chinese-language databases in global reviews. A published SLR and meta-analysis, on the treatment of negative symptoms in patients with schizophrenia using repetitive transcranial magnetic stimulation (rTMS) (Wang J et al. Shanghai Arch Psychiatry. 2017;29(2):61-76) was identified. Wang et al. searched both English (MEDLINE, Embase, Cochrane Library and Web of Science) and Chinese (Chinese National Knowledge Infrastructure, Wanfang Data, VIP, SinoMed and Airiti Library) language databases and included similar proportions of English (13/29) and Chinese (16/29) studies. Using the same approach as Wang et al., the meta-analysis was repeated with Chinese studies omitted. As in the original study, overall there was a significant difference between rTMS plus antipsychotic drugs compared to control (standardized mean difference [SMD] -0.4039, CI -0.6543– -0.1535; p<0.0001). When the Chinese and English studies were analysed separately, the overall effect was significant in the Chinese studies (SMD -0.5772, CI -0.8505– -0.3040; p<0.0001) but not significant in the English studies (SMD -0.1501, CI -0.6253–0.3251; p=0.5359). There was no clear relationship between study language and baseline age, disease course or Positive and Negative Syndrome Scale score, suggesting it was unlikely that the differing results were due to varying baseline characteristics between Chinese and English studies. Simulations were also performed to assess whether these results could be seen by chance and this was found to be unlikely. The inclusion of Chinese language studies in SLRs and meta-analyses may substantially influence the results and subsequent decisions based on these data. Future SLRs from a global perspective may therefore consider the inclusion of Chinese-language databases in their search strategies to ensure maximal relevant data are captured.

Acupuncture treatments for infantile colic: a systematic review and individual patient data meta-analysis of blinding test validated randomised controlled trials

Objective: Needle acupuncture in small children has gained some acceptance in Western medicine. It is controversial, as infants and toddlers are unable to consent to treatment. We aimed to assess its efficacy for treating infantile colic.Design: A systematic review and a blinding-test validation based on individual patient data from randomised controlled trials. Primary end-points were crying time at mid-treatment, at the end of treatment and at a 1-month follow-up. A 30-min mean difference (MD) in crying time between acupuncture and control was predefined as a clinically important difference. Pearson’s chi-squared test and the James and Bang indices were used to test the success of blinding of the outcome assessors [parents].Eligibility criteria and data sources: We included randomised controlled trials of acupuncture treatments of infantile colic. Systematic searches were conducted in Cochrane CENTRAL, MEDLINE, EMBASE, CINAHL and AMED, and in the Chinese language databases CNKI, VIP, Wang fang, SinoMed and Chinese Clinical Trial Registry.Results: We included three randomised controlled trials with data from 307 participants. Only one of the included trials obtained a successful blinding of the outcome assessors in both the acupuncture and control groups. The MD in crying time between acupuncture intervention and no acupuncture control was −24.9 min [95% confidence interval, CI −46.2 to −3.6; three trials] at mid-treatment, −11.4 min [95% CI −31.8 to 9.0; three trials] at the end of treatment and −11.8 min [95% CI −62.9 to 39.2; one trial] at the 4-week follow-up. The corresponding standardised mean differences [SMDs] were −0.23 [95% CI −0.42 to −0.06], −0.10 [95% CI −0.29 to 0.08] and −0.09 [95% CI −0.48 to 0.30]. The heterogeneity was negligible in all analyses. The statistically significant result at mid-treatment was lost when excluding the apparently unblinded study in a sensitivity analysis: MD −13.8 min [95%CI −37.5 to 9.9] and SMD −0.13 [95%CI −0.35 to 0.09]. The registration of crying during treatment suggested more crying during acupuncture [odds ratio 7.7; 95% CI 2.7–20.6; one trial]. GRADE-Moderate quality evidence.Conclusions: Percutaneous needle acupuncture treatments should not be recommended for infantile colic on a general basis.Systematic review registration: PROSPERO 2015:CRD42015023253Key pointsThe role of acupuncture in the treatment of infantile colic is controversial. Available trials are small and present conflicting results.There were no clinically important differences between infants receiving acupuncture and no acupuncture control in this IPD meta-analysis of randomised controlled trials.The data indicate that acupuncture induces some treatment pain in many of the children.The study results indicate that percutaneous needle acupuncture should not be recommended for treatment of infantile colic on a general basis.

Research on blood distribution of Tibetan population in Ali area

Objective: To explore the distribution of ABO blood group in the healthy population in the Ali area of Tibet, and to analyze the difference of blood group distribution between the Tibetan population in Ali and the Tibet Tibetan population. Methods: The blood distribution of 509 apparent healthy volunteers of Tueti County and Gal County, Tibet, which were randomly selected from September to November in 2016; 137 Tibetan blood donors, from 2016 September to2017 July and 84 Tibetan blood donors from 2015 August to 2017 July was analyzed retrospectively. The blood type was tested by the slide method. By reviewing the Chinese and foreign language database, seven articles on Tibetan blood group distribution were obtained. And the data of the blood distribution of the Ali area population and the Tibet Tibetan population were compared. Results: The ABO phenotype frequencies of 507 apparent healthy people, 137 blood donors and 84 recipients were B>O>A>AB. The composition ratio were 36.1%, 34.5%, 21.5 %, 7.9%; 40.1%, 35.0%, 17.5%, 7.3%; 39.3%, 34.5%, 20.2%, 6.0%.There was no statistically significant difference in blood group distribution between the donors and the recipients (P>0.05). And there was no significant difference in the blood group distribution between Ali and Shigatse, Nagqu, Lhasa, Shannan. However, the differences between Ali and Qamdo, Nyingchi areas were statistically significant. Conclusion: The geographical position of the blood from the west to east, B type shows a downward trend, O type blood composition ratio shows an upward trend.

Mismatch Negativity in Han Chinese Patients with Schizophrenia: A Meta-Analysis.

BackgroundPrevious meta-analysis revealed that mismatch negativity(MMN) amplitude decreased in patients with schizophrenia compared with healthy controls (Cohen’s d, d about 1), leading to the possibility of mismatch negativity being used as a biomarker for schizophrenia. However, it is unknown whether MMN is reliably changed in Chinese patients. It is necessary to carry out a meta-analysis on MMN of Han Chinese patients with schizophrenia.AimTo investigate whether MMN could be used as a biomarker for Han Chinese patients with schizophreniaMethodsA literature search was conducted to identify clinical trials on MMN in Han Chinese schizophrenia patients published before May 8, 2017, by searching the Chinese language databases CNKI, WanFang Data, VIP Data and PubMed. The effects of MMN deficits were evaluated for MMN amplitude by calculating standard mean difference (SMDs) between schizophrenia patient groups and healthy control groups.ResultsA total of 11 studies were included in the analysis. The total quality of all the studies were more than 6 as evaluated by Newcastle-Ottawa Scale (NOS). Meta-analysis of data from these studies had a pooled sample of 432 patients with schizophrenia and 392 healthy controls. There exists significant MMN deficit in schizophrenia patients compared to healthy controls (Cohen’s d=1.004). When studies were excluded due to heterogeneity, the pooled effect size of the MMN differences between the patient group and healthy controls dropped to 0.79 (Cohen’s d=0.79). Subgroup analysis showed that MMN amplitude deficits of schizophrenia over three years had the pooled effect size of 0.95, and less than three years had the pooled effect size of 0.77. Publication bias conducted via Egger regression test (t = 1.83; p = 0.101), suggested that there was no publication bias.ConclusionThe effect size of MMN amplitude between Chinese patients with schizophrenia and healthy controls is consistent with other meta-analyses published on this topic, suggesting that Han Chinese patients with schizophrenia also exhibited MMN deficits.

Alpha7 nAChR Agonists for Cognitive Deficit and Negative Symptoms in Schizophrenia: A Meta-analysis of Randomized Double-blind Controlled Trials.

BackgroundPrevious clinical trials of α7-nicotinic acetylcholine receptor agonists (α7-nAChR agonists) showed mixed results in treating the cognitive and negative symptoms of schizophrenia.AimsTo assess the efficacy and safety of α7-nAChR agonists in treating the cognitive and negative symptoms in schizophrenia.MethodsA literature search was conducted to identify randomized double-blind placebo-controlled trials for schizophrenia published before May 26, 2017, by searching PubMed, Embase, ClinicalTrials.gov, the Cochrane Library and the Chinese language databases CNKI, Wanfang, and VIP Data. The effects of α7-nAChR agonists were evaluated for overall cognitive function and negative symptoms by calculating standard mean difference (SMDs) between active drugs and placebo added to antipsychotics.Results8 studies with low bias were included. We found no statistically significant effects of α7 nAChR agonists on the overall cognitive function (SMD=-0.10[-0.46, 0.25], I2 =88%) and negative symptoms (SMD=0.13 [-0.04, 0.30], I2 =64%) in patients with schizophrenia. Sensitivity analysis showed these results to be firm. And this drug is generally safe and well tolerated with no significant difference from placebo based on adverse events (RR=1.02, [0.85, 1.23]) and dropouts (RR=1.04, [0.61, 1.78]) data. Evidence based on outcomes from the meta-analysis was rated as ‘moderate’ as per the GRADE guidelines.Conclusionα7-nAChR agonists may not be effective in reversing overall cognitive impairments and negative symptoms in patients with schizophrenia as adjunctive therapies.

Comparison of endoscopic and conventional open thyroidectomy for Graves' disease: A meta-analysis

BackgroundDespite experience with the use of endoscopic surgical technology, there is controversy over the role of endoscopic thyroidectomy (ET) for Graves' disease (GD). This study aimed to conduct a meta-analysis to evaluate the cosmetic and safety outcomes of ET versus conventional open thyroidectomy (OT) for GD with respect to short-term consequences. MethodsWe searched the following English language databases (Ovid MEDLINE, ISI Web of Science, and the Cochrane Library), and Chinese language databases (CNKI, CBMdisc, and SinoMed) between January 1996 and November 2015. The quality of the included studies was determined by the Newcastle-Ottawa Scale. A meta-analysis was conducted using RevMan 5.3 software. Pooled mean differences (MD) or odds ratios(OR) with I2 were calculated using either fixed or random-effect models. ResultsSix trials including 846 total cases were ultimately selected for meta-analysis. ET was associated with reduced blood loss (MD = −32.02; 95%CI: −36.92 to −27.12; P < 0.00001) and better cosmetic satisfaction (OR = 38.92; 95%CI: 17.40–87.06; P < 0.00001) than OT. However, OT was associated with reduced operation time (MD = 19.70; 95%CI: 2.04–37.35; P = 0.03) and lower hospital costs (MD = 303.21; 95%CI: 123.07, 483.36; P = 0.0010). Furthermore, ET and OT were not significantly different in terms of drainage volume, and they had an equivalent complication rate, including for transient recurrent laryngeal nerve palsy, transient hypocalcemia, postoperative hypothyroidism, and recurrent-hyperthyroidism. ConclusionsET appeared to provide better cosmetic satisfaction and a reduction in blood loss, whereas OT had a shorter operation time and lower hospital costs. Randomized clinical trials with large samples that include long-term follow-up data are necessary to confirm our findings.

Postoperative Anticoagulants in Preventing Portal Vein Thrombosis in Patients Undergoing Splenectomy Because of Liver Cirrhosis: A Meta-Analysis

Portal vein thrombosis (PVT) frequently occurs in patients undergoing splenectomy because of liver cirrhosis. Whether the use of postoperative anticoagulants can decrease the incidence of PVT in these subjects is inconclusive. Moreover, the safety of the use of postoperative anticoagulants in the aforementioned patients is a concern. This meta-analysis aims to explore the effectiveness and safety of the preventive anticoagulants to prevent PVT in patients undergoing splenectomy because of liver cirrhosis. Four English language databases (i.e., PubMed, Embase, Cochrane Library, and Web of Science) and four Chinese language databases (i.e., Wanfang, CNKI, Cqvip, and CBM) were searched for randomized controlled trials, cohort studies, and case-control studies on the use of preventive anticoagulants to prevent PVT in patients undergoing splenectomy because of liver cirrhosis from their inception to September 15, 2015. The primary outcome was postoperative PVT incidence. The secondary outcomes included postoperative complications and adverse reaction. Study-specific odds ratios were combined to calculate pooled value through a fixed effects model. A total of 17 original studies were included, involving 1,497 patients. This meta-analysis showed that the preventive anticoagulant group had a lower incidence of PVT than the no anticoagulant group (odds ratio, 0.31; 95% confidence interval, 0.23-0.40; P < 0.05). According to the description of limited studies, the upper gastrointestinal hemorrhage mainly occurred in the no anticoagulant group. Meanwhile, the adverse reaction was trivial in the group using anticoagulants, which could easily be released with no special management. Postoperative anticoagulants can effectively decrease PVT incidence in subjects undergoing splenectomy because of liver cirrhosis. These published studies are more prone to show that no serious negative influence of anticoagulants exists in the aspect of safety. However, further studies are still needed.

Hyperbaric oxygen therapy for people with autism spectrum disorder (ASD).

The rising prevalence of autism spectrum disorder (ASD) has increased the need for evidence-based treatments to lessen the impact of symptoms. Presently, no therapies are available to effectively treat individuals with all of the symptoms of this disorder. It has been suggested that hyperbaric oxygen therapy may alleviate the biochemical dysfunction and clinical symptoms of ASD. To determine whether treatment with hyperbaric oxygen:1. improves core symptoms of ASD, including social communication problems and stereotypical and repetitive behaviors;2. improves noncore symptoms of ASD, such as challenging behaviors;3. improves comorbid states, such as depression and anxiety; and4. causes adverse effects. On 10 December 2015, we searched CENTRAL, Ovid MEDLINE, Embase, and 15 other databases, four of which were Chinese language databases. We also searched multiple trial and research registers. We selected randomized controlled trials (RCTs) and quasi-RCTs of any dose, duration, and frequency for hyperbaric oxygen therapy compared with no treatment or sham treatment for children and adults with ASD. We used standard methodological procedures expected by The Cochrane Collaboration, in that three review authors independently selected studies, assessed them for risk of bias, and extracted relevant data. We also assessed the quality of the evidence by using the GRADE approach. We included one trial with a total of 60 children with a diagnosis of ASD who randomly received hyperbaric oxygen therapy or a sham treatment. Using GRADE criteria, we rated the quality of the evidence as low because of the small sample size and wide confidence intervals (CIs). Other problems included selection bias and short duration or follow-up.Overall, study authors reported no improvement in social interaction and communication, behavioral problems, communication and linguistic abilities, or cognitive function. With regard to the safety of hyperbaric oxygen therapy (adverse events), they reported minor-grade ear barotrauma events. Investigators found significant differences between groups in total number of side effect events (Peto odds ratio (OR) 3.87, 95% CI 1.53 to 9.82) and in the number of children who experienced side effects (Peto OR 4.40, 95% CI 1.33 to 14.48). To date, there is no evidence that hyperbaric oxygen therapy improves core symptoms and associated symptoms of ASD. It is important to note that adverse effects (minor-grade ear barotrauma events) can occur. Given the absence of evidence of effectiveness and the limited biological plausibility and possible adverse effects, the need for future RCTs of hyperbaric oxygen therapy must be carefully considered.

Mind-Body Interventions for Irritable Bowel Syndrome Patients in the Chinese Population: a Systematic Review and Meta-Analysis.

The aim of this study is to identify and assess evidence related to the efficacy of mind-body interventions on irritable bowel syndrome (IBS) in the Chinese population. Drawn from Chinese databases, nine RCTs and three Q-E studies were included in the systematic review. The methodological quality of RCTs was evaluated based on the following criteria: adequate sequence generation, allocation concealment, blinding, completeness of outcome data, selective reporting, and other potential biases. For continuous variables, the effect size (ES) was determined by calculating the standardized mean difference between groups. For dichotomous variables, the ES was determined by calculating the risk ratio (RR) between groups. Given the heterogeneity between the trials and the small number of studies included, both random effects and fixed effects models were used. The inverse variance method was used for pooling. Statistical analyses were performed using Review Manager version 5.0. The total number of papers identified was 710: 462 from English language databases and 248 from Chinese language databases. Twelve studies met our eligibility criteria. Among the studies selected, three were Q-E studies the rest RCTs. Two studies described the randomization process. None of the studies reported allocation concealment nor blinding. Seven studies reported no dropouts. One of the studies mentioned the total amount of dropouts; though the reason for dropping out was not referenced. The other four studies did not clearly report dropouts. With the exception of three studies, there was inadequate information to determine biased reporting for the majority; the level of risk for bias in these studies is unclear. Finally, six meta-analyses were performed. One was conducted with four randomized controlled trials (RCTs) that used cure rate as outcome measures to evaluate gastrointestinal (GI) symptoms, which suggested that mind-body interventions were effective in improving GI symptoms (random effects model: RR=1.08; 95% CI 1.01 to 1.17; fixed effects model: RR=1.07; 95% CI 1.01 to 1.12). The remaining five were conducted in three RCTs, which suggested that mind-body interventions were effective in improving several aspects of quality of life, including interference with activity (random effects and fixed effects models: SMD=0.64; 95% CI 0.41 to 0.86), body image (random effects model: SMD=0.36; 95% CI 0.06 to 0.67; fixed effects model: SMD=0.33; 95% CI 0.11 to 0.55), health worry (random effects and fixed effects models: SMD=0.67; 95% CI 0.44 to 0.90), food avoidance (random effects and fixed effects models: SMD=0.45; 95% CI 0.23 to 0.68), and social reaction (random effects model: SMD=0.79; 95% CI 0.47 to 1.12; fixed effects model: SMD=0.78; 95% CI 0.55 to 1.01), as measured by Irritable Bowel Syndrome Quality of Life Questionnaire ( IBS-QOL). Mind-body interventions may have the potential to improve GI symptoms in Chinese patients with IBS. The improvement of GI symptoms was also accompanied with the improvement of various outcomes, including depression, anxiety, and quality of life, just to mention a few. However, the published studies generally had significant methodological limitations. Future clinical trials with rigorous research design are needed in this field. More studies focusing on the mind-body interventions originated in China, such as tai chi and qi gong should be encouraged.

Tai Chi for Schizophrenia: A Systematic Review.

BackgroundTai Chi as a form of moderate aerobic exercise originating in China, could promote balance and healing of the mind-body. Furthermore, Tai Chi has been used as an adjunctive treatment for patients with schizophrenia. However, no meta-analysis or systematic review on adjunctive Tai Chi for patients with schizophrenia has yet been reported.AimA systematic review and meta-analysis was conducted to examine the efficacy of Tai Chi as an adjunctive treatment for schizophrenia using randomized controlled trial (RCT) data.MethodTwo evaluators independently and systematically searched both English- and Chinese-language databases for RCTs of Tai Chi for schizophrenia patients, selected studies, extracted data, conducted quality assessment and data synthesis. Statistical analyses were performed using the Review Manager (version 5.3). The Cochrane Grades of Recommendation, Assessment, Development, and Evaluation (GRADE) was used to assess the strength of the evidence.ResultsIn 6 RCTs conducted in mainland China and Hong Kong, there were 483 participants including 215 subjects in the intervention group and 268 subjects in the control group. The trials lasted 16.0 (6.2) weeks. Compared to control group, we found significant differences regarding improvement of negative symptoms assessed by the Positive and Negative Syndrome Scale (PANSS) negative symptom sub-score (2 trials) and Scale for the Assessment of Negative Symptoms (SANS) (3 trials) over the study period in the intervention group (5 trials with 6 treatment arms, n=451, SMD: -0.87 (95%CI: -1.51, -0.24), p=0.007; I2=90%). Furthermore, there is no significant difference regarding improvement of positive symptoms assessed by the PANSS positive symptom sub-score (2 trials) and Scale for the Assessment of Positive Symptoms (SAPS) (2 trials) over the study period (4 trials with 5 treatment arms, n=391, SMD: -0.09 (95%CI: -0.44, 0.26), p=0.60; I2=65%). All included RCTs did not report side effects. Based on the GRADE, the strength of the evidence for primary outcome was ‘very low’.ConclusionsThe data available on the effectiveness of adjunctive Tai Chi in patients with schizophrenia who are receiving antipsychotic is insufficient to arrive at a definitive conclusion about its efficacy. Furthermore, follow-up time in the available studies was relatively short, and all studies did not use blinded assessment of outcome measures. High-quality randomized trials are needed to inform clinical recommendations.

Literature Searches in the Conduct of Systematic Reviews and Evaluations.

SummaryPerforming a literature search is an important part of performing a systematic review or a meta-analysis of biomedical literature, which have now become the gold standards for determining what qualifies as ‘evidence-based’ medicine. Combining searches of English-language databases and the large Chinese-language databases can identify new, potentially important, sources of data that are not include in the traditional English-only reviews. Selection of a restricted subset of databases for conducting the literature search or using inappropriate methods to identify appropriate articles within each database can lead to biased results and incorrect conclusions. This article introduces common English and Chinese databases, describes the search engines available for conducting searches, discusses the basic methods and common pitfalls of conducting searches, and provides an example of a search to highlight these issues.

Herbal Medicine for Hot Flushes Induced by Endocrine Therapy in Women with Breast Cancer: A Systematic Review and Meta-Analysis.

Objective. This systematic review was conducted to evaluate the clinical effectiveness and safety of herbal medicine (HM) as an alternative management for hot flushes induced by endocrine therapy in breast cancer patients. Methods. Key English and Chinese language databases were searched from inception to July 2015. Randomized Controlled Trials (RCTs) evaluating the effects of HM on hot flushes induced by endocrine therapy in women with breast cancer were retrieved. We conducted data collection and analysis in accordance with the Cochrane Handbook for Systematic Reviews of Interventions. Statistical analysis was performed with the software (Review Manager 5.3). Results. 19 articles were selected from the articles retrieved, and 5 articles met the inclusion criteria for analysis. Some included individual studies showed that HM can relieve hot flushes as well as other menopausal symptoms induced by endocrine therapy among women with breast cancer and improve the quality of life. There are minor side effects related to HM which are well tolerated. Conclusion. Given the small number of included studies and relatively poor methodological quality, there is insufficient evidence to draw positive conclusions regarding the objective benefit of HM. Additional high quality studies are needed with more rigorous methodological approach to answer this question.

Systematic Review of the Economic Burden of Pulmonary Arterial Hypertension.

Pulmonary arterial hypertension (PAH), as a life-threatening disease with no efficient cure, may impose a tremendous economic burden on patients and healthcare systems. However, most existing studies have mainly emphasised epidemiology and medications, while large observational studies reporting on the economic burden are currently lacking. To review and evaluate evidence on the costs of PAH and the cost effectiveness of PAH treatments, and to summarise the corresponding cost drivers. Systematic literature searches were conducted in English-language databases (PubMed, Web of Science, ScienceDirect) and Chinese-language databases (China National Knowledge Infrastructure, Wanfang Data, Chongqing VIP) to identify studies (published from 2000 to 2014) assessing the costs of PAH or the cost effectiveness of PAH treatments. The search results were independently reviewed and extracted by two reviewers. Costs were converted into 2014 US dollars. Of 1959 citations identified in the initial search, 19 papers were finally included in this analysis: eight on the economic burden of PAH and 11 on economic evaluation of PAH treatments. The economic burden on patients with PAH was rather large, with direct healthcare costs per patient per month varying from $2476 to $11,875, but none of the studies reported indirect costs. Sildenafil was universally reported to be a cost-effective treatment, with lower costs and better efficacy than other medications. Medical costs were reported to be the key cost drivers. The economic burden of patients with PAH is substantial, while the paucity of comprehensive country-specific evidence in this area and the lack of reports on indirect costs of PAH warrant researchers' concern, especially in China.