Chi-square Test Research Articles

Spatio-temporal characterization of phenotypic resistance in malaria vector species.

Malaria, a deadly disease caused by Plasmodium protozoa parasite and transmitted through bites of infected female Anopheles mosquitoes, remains a significant public health challenge in sub-Saharan Africa. Efforts to eliminate malaria have increasingly focused on vector control using insecticides. However, the emergence of insecticide resistance (IR) in malaria vectors pose a formidable obstacle, and the current IR mapping models remain static, relying on fixed coefficients. This study introduces a dynamic spatio-temporal approach to characterize phenotypic resistance in Anopheles gambiae complex and Anopheles arabiensis. We developed a cellular automata (CA) model and applied it to data collected from Ethiopia, Nigeria, Cameroon, Chad, and Burkina Faso. The data encompasses georeferenced records detailing IR levels in mosquito vector populations across various classes of insecticides. In characterizing the dynamic patterns of confirmed resistance, we identified key driving factors through correlation analysis, chi-square tests, and extensive literature review. The CA model demonstrated robustness in capturing the spatio-temporal dynamics of confirmed IR states in the vector populations. In our model, the key driving factors included insecticide usage, agricultural activities, human population density, Land Use and Land Cover (LULC) characteristics, and environmental variables. The CA model developed offers a robust tool for countries that have limited data on confirmed IR in malaria vectors. The embrace of a dynamical modeling approach and accounting for evolving conditions and influences, contribute to deeper understanding of IR dynamics, and can inform effective strategies for malaria vector control, and prevention in regions facing this critical health challenge.

Differentiating mixed epithelial and stromal tumor family from predominantly cystic renal cell carcinoma using magnetic resonance imaging-based Bosniak classification system version 2019.

To differentiate mixed epithelial and stromal tumor family (MESTF) of the kidney from predominantly cystic renal cell carcinoma (RCC) using the magnetic resonance imaging (MRI)-based Bosniak classification system version 2019 (v2019). The study included 36 consecutive patients with MESTF and 77 with predominantly cystic RCC who underwent preoperative renal MRI. One radiologist evaluated and documented the clinical and MRI characteristics (age, sex, laterality, R.E.N.A.L. Nephrometry Score [RNS], surgical approach, the signal intensity on T2-weighted imaging, restricted diffusion and enhancement features in corticomedullary phase). Blinded to clinical and pathological information, another two radiologists independently evaluated Bosniak category of all masses. Interobserver agreement based on Bosniak classification system v2019 was measured by the weighted Cohen/Conger's Kappa coefficient. Furthermore, predominantly cystic RCCs and MESTFs were divided into low (categories I, II, and IIF) and high-class (categories III, and IV) tumors. The independent sample t test (Mann-Whitney U test) or Pearson Chi-square test (Fisher's exact probability test) was utilized to compare clinical and imaging characteristics between MESTFs and predominantly cystic RCCs. The performance of the Bosniak classification system v2019 in distinguishing MESTF from predominantly cystic RCC was investigated via receiver operating characteristic curve analysis. MESTF and predominantly cystic RCC groups significantly differed in terms of age, lesion size, RNS, restricted diffusion, and obvious enhancement in corticomedullary phase, but not sex, laterality, surgical approach, and the signal intensity on T2WI. Interobserver agreement was substantially based on the Bosniak classification system v2019. There were 24 low-class tumors and 12 high-class tumors in the MESTF group. Meanwhile, 13 low-class tumors and 64 high-class tumors were observed in the predominantly cystic RCC group. The distribution of low- or high-class tumors significantly differed between the MESTF and predominantly cystic RCC groups. Bosniak classification system v2019 had excellent discrimination (cutoff value = category III), and an area under curve value was 0.81; accuracy, 80.5%; sensitivity, 87.0%; and specificity, 66.7%. The MRI-based Bosniak classification system v2019 can effectively distinguish MESTF from predominantly cystic RCC if category III was used as a cutoff reference.

A novel tRNA-derived fragment tRF-17-18VBY9M works as a potential diagnostic biomarker for gastric cancer.

Gastric cancer (GC) is one of the most prevalent malignant tumors worldwide. The low effectiveness of common biomarkers for the detection of early GC makes it essential to seek new biomarkers to improve diagnostic efficacy. tsRNAs (transfer RNA-derived small RNAs) are related to the growth of malignant tumors. In this article, we focused on whether tsRNAs may be employed as biomarkers for GC. tRF-17-18VBY9M was screened in the tsRFun database as a research object. The methodological efficacy of tRF-17-18VBY9M was evaluated using Sanger sequencing, agarose gel electrophoresis assays, and gradient dilution. The χ2 test was applied to assess the interaction between tRF-17-18VBY9M expression and clinicopathologic characteristics. The receiver operating characteristic (ROC) curve was utilized to investigate the clinicalefficiency of tRF-17-18VBY9M in GC. The Chi-square test demonstrated that high-expressed tRF-17-18VBY9M was closely associated with the T stage, tumor node metastasis stage (TNM), lymph node metastasis, and neurological/vascular invasion. ROC curve analysis revealed that the diagnostic value of tRF-17-18VBY9M in GC was superior to carcinoembryonic antigen (CEA), carbohydrate antigen 199 (CA199), and carbohydrate antigen 724 (CA724). tRF-17-18VBY9M is up-regulated in both GC sera and tissues. Differential tRF-17-18VBY9M expression distinguishes GC patients from healthy donors and gastritis patients, which suggests tRF-17-18VBY9M could act as a diagnostic biomarker in GC.

South Asians and the Role of Bystanders in Domestic Violence Prevention: Results from a Pilot Study.

Domestic violence manifests in unique ways in South Asian immigrant communities. Given the need to uphold family honor, formal help-seeking remains minimal within this community. Individuals experiencing victimization rely on friends and family members as informal sources of support. These friends and family members may also be bystanders who witness victimization. Therefore, the goal of this study was to examine differences in participant responses to an online interactive bystander intervention developed for South Asians. To get community response to the intervention, B.R.A.K.E. The Cycle, a Qualtrics link with all the intervention scenarios was posted on 21 sub-Reddit pages. Screeners to ensure that participants were of South Asian origin, 18 or older and currently residing in the United States (US) were added. True to the study purpose, to examine differences across gender and generational position, we conducted descriptive analysis and chi-square tests. There were differences in scenarios by gender and immigration position. Some of the main findings point to the need to report domestic violence, seek help (formal or informal) as well as surprisingly some responses justified the use of force by a male partner. We discuss these in-depth by scenarios. This is the first study to examine differences in bystander preference and response to using an intervention that was developed specifically for the South Asian community. Social workers can utilize this intervention to create dialogue around domestic violence prevention and the role of bystander within the South Asian and potentially other immigrant communities.

Impacts of Internet literacy and Internet contact on the communication effect of university students' ideological and political education in China.

Internet has made the communication environment of ideological and political education (IPE) more complex for university students. Therefore, it is necessary to investigate the impact of university students' Internet literacy and contact on the communication effects of IPE. A total of 2283 Chinese university students were recruited to complete verified online questionnaires on Internet literacy, Internet contact duration, and the communication effects of IPE. SPSS V20 statistical software was used for the ordinal logistic regression analysis, chi-square test, and t-test. Up to 95.31% of the university students obtained information through the Internet. There were significant differences between the ILS-high (54.93%) and ILS-low (45.07%) groups in both Internet literacy (P<0.001) and Internet contact (P<0.001). When comparing the communication effects of IPE between the ILS-high and ILS-low groups, both groups had the best emotional items and the worst cognitive dimensions. Internet literacy, Internet contact, major, and gender significantly impacted the communication effects of IPE. In the Internet era, there is an urgent need to improve university students' Internet literacy, so that they can have high Internet self-control contact skills to give full play to the positive guiding role of network media and improve the communication effects of university students' IPE.

Contrast-enhanced ultrasound for differentiating benign from malignant focal solid renal lesions in pediatric patients.

The contrast-enhanced ultrasound (CEUS) has been mainly applied to adults to differentiate benign and malignant renal lesions, however, the characteristics of CEUS in pediatric has not been as well studied as in adults. In the present work, the eligible pediatric patients who underwent renal CEUS between March 2016 and February 2023 were retrospectively analyzed. It included 20 lesions (median diameter, 8.4cm; range, 1.8-18.0cm) from 20 patients (median age, 28.0months; range, 3.0-212.0months; 9 boys) in malignant group and 5 lesions (median diameter, 3.8cm; range, 1.3-7.5cm) from 5 patients (median age, 25.0months; range, 0.7-216.0months; 2 boys) in benign group. The diagnostic performance was assessed. Nonparametric and Chi-square tests were performed. With hyperenhancement plus wash-out, CEUS showed a sensitivity of 95.0% [95% confidence interval (CI): 75.1%, 99.9%], a specificity of 80.0% (CI: 28.4%, 99.5%), a positive predictive value of 95.0% (CI: 75.1%, 99.9%) and a negative predictive value of 80.0% (CI: 28.4%, 99.5%). It suggested that CEUS is a valuable technique for identifying between malignant and benign renal lesions in children.

Analysis of short-term ventilation weaning for patients in spontaneous supratentorial intracranial hemorrhage.

Prolonged ventilation is a complication of spontaneous supratentorial hemorrhage patients, but the predictive relationship with successful weaning in this patient cohort is not understood. Here, we evaluate the incidence and factors of ventilation weaning in case of spontaneous supratentorial hemorrhage. We retrospectively studied data from 166 patients in the same hospital from January 2015 to March 2021 and analyzed factors for ventilation weaning. The clinical data recorded included patient age, gender, timing of operation, initial Glasgow Coma Scale (GCS), Intracranial hemorrhage (ICH) score, alcohol drinking, cigarette smoking, medical comorbidity, and the blood data. Predictors of patient outcomes were determined by the Student t test, chi-square test, and logistic regression. We recruited and followed 166 patients who received operation for spontaneous supratentorial hemorrhage with cerebral herniation. The group of successful weaning had 84 patients and the group of weaning failed had 82 patients. The patient's age, type of operation, GCS on admission to the Intensive care unit (ICU), GCS at discharge from the ICU, medical comorbidity was significantly associated with successful weaning, according to Student t test and the chi-square test. According to our findings, patients with stereotaxic surgery, less history of cardiovascular or prior cerebral infarction, GCS >8 before admission to the hospital for craniotomy, and a blood albumin value >3.5 g/dL have a higher chance of being successfully weaned off the ventilator within 14 days.

Association between preoperative anxiety states and postoperative complications in patients with esophageal cancer and COPD: a retrospective cohort study.

Esophageal cancer brings emotional changes, especially anxiety to patients. Co-existing anxiety makes the surgery difficult and may cause complications. This study aims to evaluate effects of anxiety in postoperative complications of esophageal cancer patients with chronic obstructive pulmonary disease (COPD). Patients with esophageal cancer and co-existing COPD underwent tumor excision. Anxiety was measured using Hospital Anxiety and Depression Scale (HAD) before surgery. Clavien-Dindo criteria were used to grade surgical complications. A multiple regression model was used to analyze the relationship between anxiety and postoperative complications. The chi-square test was used to compare the differences in various types of complications between the anxiety group and the non-anxiety group. A multinomial logistic regression model was used to analyze the influencing factors of mild and severe complications. This study included a total of 270 eligible patients, of which 20.7% had anxiety symptoms and 56.6% experienced postoperative complications. After evaluation by univariate analysis and multivariate logistic regression models, the risk of developing complications in anxious patients was 4.1 times than non-anxious patients. Anxious patients were more likely to develop pneumonia, pyloric obstruction, and arrhythmia. The presence of anxiety, surgical method, higher body mass index (BMI), and lower preoperative oxygen pressure may increase the incidence of minor complications. The use of surgical methods, higher COPD assessment test (CAT) scores, and higher BMI may increase the incidence of major complications, while anxiety does not affect the occurrence of major complications (P = 0.054). Preoperative anxiety is associated with postoperative complications in esophageal cancer patients with co-existing COPD. Anxiety may increase the incidence of postoperative complications, especially minor complications in patient with COPD and esophageal cancer.

Study of social awareness regarding body donations for scientific and educational purposes.

The basis of teaching anatomy is the understanding of the body's structures using human cadavers. Body donation should be a fully conscious and voluntary act. There is a growing demand for human cadavers in medical universities. To meet these demands, it is necessary to understand the societal awareness regarding body donation. The study utilized a proprietary single-choice questionnaire while maintaining the anonymity of the respondents. The study included 1004 individuals, comprising 700 women and 304 men. The analysis employed the Mann-Whitney test, Pearson's chi-squared test with calculation of the Cramer's V coefficient. Among the respondents, 56.37% consider donating their bodies for scientific and educational purposes. Among the concerns associated with donation, fear of lack of proper respect for the remains by students (18.23%), family opposition (16.24%), and religious reasons (9.16%) were highlighted. Non-religious individuals are more inclined to donate their bodies for scientific and educational purposes than religious individuals (p < 0.001). Residents of rural areas and small towns are less likely to consider donating their bodies for scientific and educational purposes than residents of large cities (p = 0.002). As many as 85.76% of respondents believe that human remains are essential for effective anatomy education. Increasing public awareness of cadaver donation may contribute to increasing the effectiveness of anatomy teaching at medical universities.

The impact of continuous and intermittent supportive counseling on self-efficacy and continuation of breastfeeding in lactating women affected by COVID-19: a quasi-experimental trial.

Promoting exclusive breastfeeding can have a great effect in reducing the complications and mortality rate of mother and child. The study aimed to compare the effects of continuous and intermittent supportive counselling on the self-efficacy and continuity of breastfeeding among Lactating mothers with COVID-19. The study was a semi-experimental research method and was conducted on 73 mothers with COVID-19 who were hospitalized in Ayatollah Mousavi Hospital in Zanjan, Iran from May 2021 to April 2022. In the continuous counselling group, counselling was provided daily for 14 days, while in the intermittent counselling group, counselling was provided once a week for four weeks. Breastfeeding continuity was assessed based on the World Health Organization's classification, and breastfeeding self-efficacy was measured using Dennis' standard breastfeeding self-efficacy questionnaire (BSE) up to four months after delivery. The data were analyzed using chi-square tests, independent t-tests, paired t-tests, analysis of variance with repeated measures, and survival analysis (Kaplan-Meier) with a 95% confidence level. The survival analysis revealed that the cessation of exclusive breastfeeding occurred in 17 cases within the continuous counselling group and in 22 cases within the intermittent counselling group. The rates of continuation for exclusive breastfeeding were 52.8% and 40.5% in the continuous and intermittent counselling group respectively. However, no statistically significant differences were observed in the continuation of breastfeeding and the trend of changes in the mean scores of breastfeeding self-efficacies between the continuous and intermittent counselling groups. Furthermore, comparing the change in breastfeeding self-efficacy scores between the one-month and four-month follow-ups within the continuous counselling group, a statistically significant increase was observed. The results indicated no difference in the effectiveness of continuous and intermittent counseling methods in improving breastfeeding continuity in women with COVID-19. Further research is needed to explore the long-term effects of different counseling approaches on breastfeeding outcomes during crises. The study was registered on the Iranian Registry of Clinical Trials website on 29/06/2021 with the registration code IRCT20150731023423N19. It can be accessed via this link: https://irct.behdasht.gov.ir/user/trial/55391/view .

Longitudinal Changes in Diagnostic Accuracy of a Differential Diagnosis List Developed by an AI-Based Symptom Checker: Retrospective Observational Study.

Artificial intelligence (AI) symptom checker models should be trained using real-world patient data to improve their diagnostic accuracy. Given that AI-based symptom checkers are currently used in clinical practice, their performance should improve over time. However, longitudinal evaluations of the diagnostic accuracy of these symptom checkers are limited. This study aimed to assess the longitudinal changes in the accuracy of differential diagnosis lists created by an AI-based symptom checker used in the real world. This was a single-center, retrospective, observational study. Patients who visited an outpatient clinic without an appointment between May 1, 2019, and April 30, 2022, and who were admitted to a community hospital in Japan within 30 days of their index visit were considered eligible. We only included patients who underwent an AI-based symptom checkup at the index visit, and the diagnosis was finally confirmed during follow-up. Final diagnoses were categorized as common or uncommon, and all cases were categorized as typical or atypical. The primary outcome measure was the accuracy of the differential diagnosis list created by the AI-based symptom checker, defined as the final diagnosis in a list of 10 differential diagnoses created by the symptom checker. To assess the change in the symptom checker's diagnostic accuracy over 3 years, we used a chi-square test to compare the primary outcome over 3 periods: from May 1, 2019, to April 30, 2020 (first year); from May 1, 2020, to April 30, 2021 (second year); and from May 1, 2021, to April 30, 2022 (third year). A total of 381 patients were included. Common diseases comprised 257 (67.5%) cases, and typical presentations were observed in 298 (78.2%) cases. Overall, the accuracy of the differential diagnosis list created by the AI-based symptom checker was 172 (45.1%), which did not differ across the 3 years (first year: 97/219, 44.3%; second year: 32/72, 44.4%; and third year: 43/90, 47.7%; P=.85). The accuracy of the differential diagnosis list created by the symptom checker was low in those with uncommon diseases (30/124, 24.2%) and atypical presentations (12/83, 14.5%). In the multivariate logistic regression model, common disease (P<.001; odds ratio 4.13, 95% CI 2.50-6.98) and typical presentation (P<.001; odds ratio 6.92, 95% CI 3.62-14.2) were significantly associated with the accuracy of the differential diagnosis list created by the symptom checker. A 3-year longitudinal survey of the diagnostic accuracy of differential diagnosis lists developed by an AI-based symptom checker, which has been implemented in real-world clinical practice settings, showed no improvement over time. Uncommon diseases and atypical presentations were independently associated with a lower diagnostic accuracy. In the future, symptom checkers should be trained to recognize uncommon conditions.

Is it an abortion: Classification of pregnancy-ending interventions after 24 weeks in the presence of lethal fetal anomalies.

To determine how obstetrician-gynecologists categorize pregnancy-ending interventions in the setting of lethal fetal anomalies. We conducted a sequential explanatory mixed methods study of U.S. obstetrician-gynecologists from May to July 2021. We distributed a cross-sectional online survey via email and social media and completed qualitative telephone interviews with a nested group of participants. We assessed institutional classification as induced abortion versus indicated delivery for six scenarios of ending a pregnancy with lethal anomalies after 24 weeks, comparing classification using McNemar chi-square tests with Benjamini-Hochburg correction for multiple comparisons with false discovery rate of 0.05. We performed thematic analysis of qualitative data and then performed a mixed methods analysis. We included 205 respondents; most were female (84.4%), had provided abortion care (80.2%), and were general OB/GYNs (59.3%), with broad representation across pre-Dobbs state and institutional abortion policies. Twenty-one qualitative participants had similar characteristics to the whole sample. Scenarios were classified as induced abortion by the majority of respondents, ranging from 53.2% for 32-week induction for anencephaly, to 82.9% for feticidal injection and 24-week induction for anencephaly. Mixed methods analysis revealed the relevance of gestational age (later interventions less likely to be considered induced abortion) and procedure method and setting (dilation and evacuation, feticidal injection, and freestanding facility all increasing classification as induced abortion). There is wide variation in classification of pregnancy-ending interventions for lethal fetal anomalies, even among trained OB/GYNs. Method, timing, and location of ending a nonviable pregnancy influence classification, though perinatal outcome is unchanged. The classification of pregnancy-ending interventions for lethal fetal anomalies after 24 weeks as indicated delivery versus induced abortion is reflective of sociopolitical regulatory factors as opposed to medical science. The regulatory requirement for classification negatively impacts access to care, especially in environments where induced abortion is legally restricted.

Longitudinal invariance of the Patient Health Questionnaire-9 among patients receiving pharmacotherapy for major depressive disorder: A secondary analysis of clinical trial data.

Comparing self-reported symptom scores across time requires longitudinal measurement invariance (LMI), a psychometric property that means the measure is functioning identically across all time points. Despite its prominence as a measure of depression symptom severity in both research and health care, LMI has yet to be firmly established for the Patient Health Questionnaire-9 depression module (PHQ-9), particularly over the course of antidepressant pharmacotherapy. Accordingly, the objective of this study was to assess for LMI of the PHQ-9 during pharmacotherapy for major depressive disorder. This was a secondary analysis of data collected during a randomized controlled trial. A total of 1,944 veterans began antidepressant monotherapy and completed the PHQ-9 six times over 24 weeks of treatment. LMI was assessed using a series of four confirmatory factor analysis models that included all six time points, with estimated parameters increasingly constrained across models to test for different aspects of invariance. Root-mean-square error of approximation of the chi-square difference test values below 0.06 indicated the presence of LMI. Exploratory LMI analyses were also performed for separate sex, age, and race subgroups. Root-mean-square error of approximation of the chi-square difference test showed minimal change in model fits during invariance testing (≤ 0.06 for all steps), supporting full LMI for the PHQ-9. LMI was also supported for all tested veteran subgroups. As such, PHQ-9 sum scores can be compared across extended pharmacotherapy treatment durations. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

The status of academic interventional radiologists in Germany with focus on gender disparity: how can we do better?

The aim was to characterize the framework conditions in academic interventional radiology (IR) in Germany with focus on differences between genders. After IRB approval, all members of The German Society for Interventional Radiology and Minimally Invasive Therapy (n = 1,632) were invited to an online survey on work and research. Statistical comparisons were undertaken with the Fisher's exact test, Wilcoxon rank sum test or Pearson's Chi-squared test. From 267 available questionnaires (general response rate 16.4%), 200 were fully completed. 40% of these (78/200) were involved in research (71% men vs. 29% women, p < 0.01) and eligible for further analysis. Of these, 6% worked part-time (2% vs. 17%, p < 0.05). 90% of the respondents spent less than 25% of their research duringtheir paid working hours, and 41% performed more than 75% of their research during.leisure time. 28% received exemption for research. 88% were (rather) satisfied with their career. One in two participants successfully applied for funding, with higher success rates among male applicants (90% vs. 75%) and respondents with protected research time (93% vs. 80%). Compared to men, women rated their entrance in research as harder (p < 0.05), their research career as more important (p < 0.05), felt less noticed at congresses (93% vs. 53%, p < 0.01), less confident (98% vs. 71%, p < 0.01), and not well connected (77% vs. 36%, p < 0.01). CONCLUSION: Women and men did research under the same circumstances; however, women were underrepresented. Future programs should generally focus on protected research time and gather female mentors to advance academic IR in Germany.

Lymphatic plastic bronchitis and primary chylothorax: A study based on computed tomography lymphangiography.

This study presents an evaluation of the computed tomography lymphangiography (CTL) features of lymphatic plastic bronchitis (PB) and primary chylothorax to improve the diagnostic accuracy for these two diseases. To improve the diagnosis of lymphatic PB or primary chylothorax, a retrospective analysis of the clinical features and CTL characteristics of 71 patients diagnosed with lymphatic PB or primary chylothorax was performed. The clinical and CTL data of 71 patients (20 with lymphatic PB, 41 with primary chylothorax, and 10 with lymphatic PB with primary chylothorax) were collected retrospectively. CTL was performed in all patients. The clinical manifestations, CTL findings, and conventional chest CT findings of the three groups of patients were compared. The chi-square test or Fisher's exact test was used to compare the differences among the three groups. A difference was considered to be statistically significant when P < 0.05. (1) The percentages of abnormal contrast medium deposits on CTL in the three groups were as follows: Thoracic duct outlet in 14 (70.0%), 33 (80.5%) and 8 (80.0%) patients; peritracheal region in 18 (90.0%), 15 (36.6%) and 8 (80.0%) patients; pleura in 6 (30.0%), 33 (80.5%) and 9 (90.0%) patients; pericardium in 6 (30.0%), 6 (14.6%) and 4 (40.0%) patients; and hilum in 16 (80.0%), 11 (26.8%) and 7 (70.0%) patients; and (2) the abnormalities on conventional chest CT in the three groups were as follows: Ground-glass opacity in 19 (95.0%), 18 (43.9%) and 8 (80.0%) patients; atelectasis in 4 (20.0%), 26 (63.4%) and 7 (70.0%) patients; interlobular septal thickening in 12 (60.0%), 11 (26.8%) and 3 (30.0%) patients; bronchovascular bundle thickening in 14 (70.0%), 6 (14.6%) and 4 (40.0%) patients; localized mediastinal changes in 14 (70.0%), 14 (34.1%), and 7 (70.0%) patients; diffuse mediastinal changes in 6 (30.0%), 5 (12.2%), and 3 (30.0%) patients; cystic lesions in the axilla in 2 (10.0%), 6 (14.6%), and 2 (20.0%) patients; and cystic lesions in the chest wall in 0 (0%), 2 (4.9%), and 2 (4.9%) patients. CTL is well suited to clarify the characteristics of lymphatic PB and primary chylothorax. This method is an excellent tool for diagnosing these two diseases.

A domain specific health-related quality of life of omani patients living with chronic wounds.

Chronic wounds, defined as wounds that do not heal in a logical set of stages, impact patients' quality of life by disrupting their self-esteem, sleep, social interaction, work capacity, and psychological well-being. Chronic wounds are a prevalent problem in Oman due to the high number of patients with diabetes, sickle cell disease, road traffic accidents, and decubitus ulcer. Therefore, it is paramount to analyse the health-related quality of life (HRQOL) of these patients with chronic wounds. An observational, cross-sectional, descriptive study with a quantitative approach was conducted among 275 adult patients with chronic wounds in three tertiary hospitals of Muscat from June to December 2021 using a self-reported Cardiff life wound impact questionnaire and the Bates-Jensen wound assessment tool. Data were analysed with IBM SPSS version 23 using inferential statistics and chi-square test. We found that the majority of participants were men (178; 64.7%), aged between 41 and 60 years (107; 38.9%), predominantly with diabetic wounds (80; 29.1%). Respondents reported poor HRQOL across all domains: well-being (63.24±18.092), physical (53.24±18.387), and social (59.54±19.025). Statistically significant poorer HRQOL was observed among the elderly above 60 years, illiterates, those with traumatic wounds, and those receiving medication and dressing as treatment. Our findings indicate that Omani patients with chronic wounds experience low HRQOL. It is imperative for healthcare providers to offer comprehensive care to these patients. To enhance their quality of life and alleviate suffering, evaluating both the wounds and HRQOL is essential. Such assessments will enable the optimisation of treatment and coping strategies for patients.

Characterization of HER2-low breast cancer in young women with germline BRCA1/2 pathogenetic variants: Results of a large international retrospective cohort study.

Breast cancer (BC) in women aged ≤40 years carrying germline pathogenetic variants (PVs) in BRCA1/2 genes is infrequent but often associated with aggressive features. Human epidermal growth factor receptor 2 (HER2)-low-expressing BC has recently emerged as a novel therapeutic target but has not been characterized in this rare patient subset. Women aged ≤40 years with newly diagnosed early-stage HER2-negative BC (HER2-0 and HER2-low) and germline BRCA1/2 PVs from 78 health care centers worldwide were retrospectively included. Chi-square test and Student t-test were used to describe variable distribution between HER2-0 and HER2-low. Associations with HER2-low status were assessed with logistic regression. Kaplan-Meier method and Cox regression analysis were used to assess disease-free survival (DFS) and overall survival. Statistical significance was considered for p≤.05. Of 3547 included patients, 32.3% had HER2-low BC, representing 46.3% of hormone receptor-positive and 21.3% of triple-negative (TN) tumors. HER2-low vs. HER2-0 BC were more often of grade 1/2 (p<.001), hormone receptor-positive (p<.001), and node-positive (p=.003). BRCA2 PVs were more often associated with HER2-low than BRCA1 PVs (p<.001). HER2-low versus HER2-0 showed better DFS (hazard ratio [HR], 0.86; 95% CI, 0.76-0.97) in the overall population and more favorable DFS (HR, 0.78; 95% CI, 0.64-0.95) and overall survival (HR, 0.65; 95% CI, 0.46-0.93) in the TN subgroup. Luminal A-like tumors in HER2-low (p=.014) and TN and luminal A-like in HER2-0 (p=.019) showed the worst DFS. In young patients with HER2-negative BC and germline BRCA1/2 PVs, HER2-low disease was less frequent than expected and more frequently linked to BRCA2 PVs and associated with luminal-like disease. HER2-low status was associated with a modestly improved prognosis.

Exploring patient and staff member views on a 'consent for contact' system for sexual health research: A mixed methods study.

Recruitment in sexual health research is challenging. This study explores the potential of a Consent for Contact system (C4C) - generic consent for research contact - to improve participant recruitment and engagement in sexual health research. Our objectives were to understand patient and staff understanding of research, their views on a separate C4C system, and their preferences for its acceptability in a sexual health clinic setting. A two-stage study was conducted at a large urban UK sexual health clinic from November 2021 to July 2022. Stage one involved a self-completed questionnaire administered to all patients and staff. In Stage 2, semi-structured interviews (SSIs) further explored patient concerns and preferences. Survey data were analysed using chi-square and Fisher's exact test and thematic analysis was applied to free-text responses and SSIs. A total of 205/300 patient (68%) and 41/280 staff questionnaires (15%) were completed. Motivations for research participation included altruism and personal interest. Statistically significant differences were found between patients' and staff members' concerns on confidentiality and anticipated feeling of pressure to participate. The majority of staff (n = 38, 93%) and half of patients (n = 100, 49%) supported implementation of a sexual health C4C system. Participants recognised the potential benefits of a sexual health C4C system, including enhanced privacy and increased research opportunities. Concerns were raised about stigma, terminology, and signing-up methods. This study found the C4C system has the potential to enhance participant recruitment and engagement in sexual health research, but implementation support is narrowly divided with concerns around privacy and sign-up processes. These insights call for a patient-centred design approach, emphasising clear communication and privacy. Future research should focus on implementing and evaluating a sexual health C4C system to further explore their effectiveness and acceptability in different contexts.

Prognostic value of geriatric and cardiac parameters for one-year mortality in older heart failure patients. A multicentre, observational, prospective study.

Heart failure is prevalent among older people and has a poor prognosis. The aim of this study is to identify potential prognostic, geriatric, and cardiac parameters which could help clinicians identify older heart failure patients at high risk for one-year mortality. The multicentre, observational cohort study which included 147 heart failure patients aged ≥75 years, hospitalized in the cardiac or geriatric department in two hospitals. One-year survival was the outcome measure. For univariate analysis Chi-square test and independent sample T-test were used; for multivariate analysis Logistic regression and Cox regression for time-dependent analysis. One-year mortality was 28% (41/147). One-year survivors and non-survivors did not differ in the following characteristics: age, gender, sodium level at hospital discharge, ejection fraction, NYHA Class, basic and instrumental activities of daily living, and the presence of a geriatric risk profile. There was a significant lower systolic blood pressure at discharge in non-survivors compared to one-year-survivors (mean 125.26 mmHg vs. 137.59 mmHg). Non-survivors had more severe underlying comorbidities according to the age adjusted Charlson Comorbidity index (CCI) (mean 8.80 vs. 7.40).Both logistic and Cox regression showed a higher risk and rate of mortality with decreasing systolic blood pressure at discharge (OR 0.963, p=0.001 and HR 0.970, p<0.001) and with increasing CCI (OR 1.344, p=0.002 and HR 1.269, p=0.001); the other variables were not significantly related. Lower blood pressure and more severe comorbidities, but not functionality nor the presence of a geriatric risk profile, are related to one-year mortality in older, in-hospital heart failure patients.

Impact of stage-specific limb function exercises guided by a self-management education model on arteriovenous fistula maturation status.

The exercise of limb function is the most economical and safe method to promote the maturation of arteriovenous fistula (AVF). However, due to the lack of a unified exercise standard in China, many patients have insufficient awareness of the importance of AVF, leading to poor effectiveness of limb function exercise. The self-management education model can effectively promote patients to take proactive health-related actions. This study focuses on the characteristics of patients during the peri-AVF period and conducts a phased limb function exercise under the guidance of the self-management education model to observe changes in factors such as the maturity of AVF. To assess the impact of stage-specific limb function exercises, directed by a self-management education model, on the maturation status of AVFs. This study is a randomized controlled trial involving 74 patients with forearm AVFs from the Nephrology Department of a tertiary hospital in Sichuan Province, China. Patients were randomly divided into an observation group and a control group using a random number table method. The observation group underwent tailored stage-specific limb function exercises, informed by a self-management education model which took into account the unique features of AVF at various stages, in conjunction with routine care. Conversely, the control group was given standard limb function exercises along with routine care. The assessment involves the maturity of AVFs post-intervention, postoperative complications, and the self-management level of the fistula in both groups patients. Analyses were conducted using SPSS version 23.0. Count data were represented by frequency and percentage and subjected to chi-square test comparisons. Measurement data adhering to a normal distribution were presented as mean ± SD. The independent samples t-test was utilized for inter-group comparisons, while the paired t-test was used for intra-group comparisons. For measurement data not fitting a normal distribution, the median and interquartile range were presented and analyzed using the Wilcoxon rank sum test. At the 8-wk postoperative mark, the observation group demonstrated significantly higher scores in AVF symptom recognition, symptom prevention, and self-management compared to the control group (P < 0.05). However, the variance in symptom management scores between the observation and control groups lacked statistical significance (P > 0.05). At 4 wk after the operation, the observation group displayed a superior vessel diameter and depth from the skin of the drainage vessels in comparison to the control group (P < 0.05). While the observation group did manifest elevated blood flow rates in the drainage vessels relative to the control group, this distinction was not statistically significant (P > 0.05). By the 8-wk postoperative interval, the observation group outperformed the control group with notable enhancements in blood flow rates, vessel diameter, and depth from the skin of drainage vessels (P < 0.01). Seven days following the procedure, the observation group manifested significantly diminished limb swelling and an overall reduced complication rate in contrast to the control group (P < 0.05). The evaluation of infection, thrombosis, embolism, arterial aneurysm stenosis, and incision bleeding showed no notable differences between the two groups (P > 0.05). By the 4-wk postoperative juncture, complications between the observation and control groups were statistically indistinguishable (P > 0.05). Stage-specific limb function exercises, under the guidance of a self-management education model, amplify the capacity of AVF patients to discern and prevent symptoms. Additionally, they expedite AVF maturation and mitigate postoperative limb edema, underscoring their efficacy as a valuable method for the care and upkeep of AVF in hemodialysis patients.