World Health Organization Screening Research Articles

Roadmap to Success: Illustrating Insights from a KAP Study on Cervical Cancer Prevention and HPV Vaccination

Introduction Cervical cancer is a public health challenge in low- and middle-income countries, with India ranking among the highest in cervical cancer burden. The World Health Organization (has set ambitious targets for cervical cancer elimination by 2030, emphasizing the importance of human papillomavirus (HPV) vaccination and screening. In response, the National Technical Advisory Group of Immunization recommends the introduction of HPV vaccination for all eligible girls aged 9 to 14 years in India under the Universal Immunization Program. However, successful implementation requires both vaccine availability and changes in health care providers' knowledge, attitudes, and practices (KAP) regarding cervical cancer prevention and HPV vaccination. Methodology This study aims to assess KAP among clinicians regarding cervical cancer and HPV vaccination. A cross-sectional survey collected responses from 451 practicing gynecologists and medical practitioners across 15 states of India. The questionnaire sought insights into patient inquiries, information sources, awareness levels, methods of patient education, and common myths and misconceptions. Results Results indicate a high prevalence of patient inquiries about cervical cancer and the HPV vaccine, emphasizing the need for accurate and accessible information. While doctors were generally knowledgeable, misconceptions persisted among patients, including beliefs about low risk, inevitability of cervical cancer, and concerns about vaccine safety. Doctors primarily relied on verbal communication for patient education, suggesting potential for utilizing digital platforms and visual aids to enhance outreach. Insights Insights from doctors underscored the importance of addressing misinformation and leveraging various communication channels, including social media, posters, and celebrity endorsements, to improve awareness and acceptance of vaccination. Disparities in vaccine availability and administration rates highlighted the need for targeted interventions to ensure equitable access. Limitations Limitations of the study included its cross-sectional design and reliance on self-reported data, which may introduce bias. However, findings suggest a need for ongoing medical education and collaboration with stakeholders to drive awareness and acceptance of HPV vaccination. Conclusion In conclusion, while gynecologists and medical practitioners demonstrate adequate KAP regarding cervical cancer prevention, there is room for improvement in patient education and communication strategies. Refining educational materials and strengthening communication channels would enhance awareness and reduce cervical cancer burden.

Emotion regulation across psychiatric disorders.

Difficulties with emotion regulation have been associated with multiple psychiatric conditions. In this study, we aimed to investigate emotional regulation difficulties in young adults who gamble at least occasionally (ie, an enriched sample), and diagnosed with a range of psychiatric disorders using the validated Difficulties in Emotion Regulation Scale (DERS). A total of 543 non-treatment-seeking individuals who had engaged in gambling activities on at least 5 occasions within the previous year, aged 18-29 were recruited from general community settings. Diagnostic assessments included the Mini International Neuropsychiatric Inventory, Minnesota Impulsive Disorders Interview, attention-deficit/hyperactivity disorder World Health Organization Screening Tool Part A, and the Structured Clinical Interview for Gambling Disorder. Emotional dysregulation was evaluated using DERS. The profile of emotional dysregulation across disorders was characterized using Z-scores (those with the index disorder vs. those without the index disorder). Individuals with probable ADHD displayed the highest level of difficulties in emotional regulation, followed by intermittent explosive disorder, social phobia, and generalized anxiety disorder. In contrast, participants diagnosed with obsessive-compulsive disorder showed relatively lower levels of difficulties with emotional regulation. This study highlights the importance of recognizing emotional dysregulation as a trans-diagnostic phenomenon across psychiatric disorders. The results also reveal differing levels of emotional dysregulation across diagnoses, with potential implications for tailored treatment approaches. Despite limitations such as small sample sizes for certain disorders and limited age range, this study contributes to a broader understanding of emotional regulation's role in psychiatric conditions.

Cervical Cancer Screening and Treatment Algorithms Using Human Papillomavirus Testing-Lessons Learnt from a South African Pilot Randomized Controlled Trial.

To report quantitative and qualitative results on cervical cancer human papillomavirus (HPV)-based screening and treatment algorithms, with/out triage with visual inspection after acetic acid (VIA), followed by ablative treatment (AT). Women 30 to 54 years old from Durban, South Africa were recruited, regardless of human immunodeficiency virus (HIV) status, randomized into one of two study arms and screened for HPV. VIA triage arm: HPV-positive women were triaged using VIA, biopsied and received AT if VIA positive and eligible; no triage arm: eligible HPV-positive women received AT. Women ineligible for AT were referred to colposcopy. Women were asked about side effects immediately and 1 week after AT. Retention to screening and treatment algorithms was compared between arms. A total of 350 women [275 HIV-uninfected and 75 women living with HIV, (WLWH)] were allocated to receive HPV testing with VIA triage (n = 175) or no triage (n = 175). HPV prevalence was 28% [95% confidence interval (CI) = 23-33]; WLWH: 52% (95% CI = 40-64) versus HIV-uninfected: 21% (95% CI = 17-27; P < 0.05). Among women who underwent VIA triage with histologic diagnosis, 3/17 were VIA negative with cervical intraepithelial neoplasia (CIN)2+; 14/18 were VIA positive with <CIN2. Retention to screening and treatment algorithms was high (92%). This pilot demonstrated the feasibility of implementing screening and treatment algorithms, including performing triage and treatment in one visit; however, VIA triage did not reduce overtreatment and missed some precancerous lesions. This study reports on implementation feasibility of two World Health Organization screening and treatment algorithms (with/out VIA triage). Although the retention to screening and treatment algorithms was high in both arms, the question of how best triaging HPV-positive women deserves further consideration, particularly for WLWH. See related In the Spotlight, p. 763.

Accuracy of C-reactive protein and a differentiated white cell count in diagnosing tuberculosis.

Tuberculosis (TB) is treatable with a high cure rate. In South Africa, 70% of pulmonary TB is microbiologically confirmed. Autopsy studies of HIV-positive people found 45.7% undiagnosed TB cases. The primary objective investigated whether CRP and a differentiated white cell count (WCC) and ratios thereof are useful screening tools for TB. This retrospective cross-sectional study included adult patients admitted to two tertiary hospitals in Bloemfontein with TB workups between April 2016 and September 2019. National Health Laboratory Service (NHLS) provided laboratory data. Tuberculosis Xpert® MTB/RIF, Xpert® MTB/RIF Ultra and TB culture were used as reference standard for TB diagnosis. The study population comprised 1294 patients; 15.1% had TB, 56.0% were male and 63.1% HIV-positive. Patients with TB were younger (p < 0.0001; 95% CI: -8;-3 years). In the total population, WCC had the highest area under the curve (0.59). White cell count (p < 0.0001), neutrophils (p = 0.0003) and lymphocytes (p = 0.0394) were lower in TB patients, and CRP-WCC ratio (CWR) (p = 0.0009) and CRP-lymphocyte ratio (CLR) (p = 0.0386) higher. In HIV-positive patients, WCC (p = 0.0003), neutrophils (p = 0.002) and lymphocytes (p = 0.0491) were lower in TB patients and CWR (p = 0.0043) higher. No parameter reached the World Health Organization screening targets of 70% specificity with 90% sensitivity. Differentiated WCC and CRP are not useful in screening hospitalised patients for TB in our setting. Our study guides future research to augment current screening and diagnostic algorithms for TB, specifically in advanced HIV disease.

Use of the World Health Organization primary eye care protocol to investigate the ocular health status of school children in Rwanda

To assess the ocular health status of primary and secondary schoolchildren in Rwanda and to explore the use of the World Health Organization (WHO) primary eye care screening protocol. This was a cross-sectional population-based study across 19 schools in Rwanda. Initial screening was carried out using the WHO screening protocol, whereby visual acuity was measured using a tumbling E Snellen chart (6/60 and 6/12). Abnormal ocular features were identified using a flashlight and history against a checklist. All children with abnormal screening were referred to an on-site ophthalmic clinic for full examination. Those who could not be treated on-site were referred to an ophthalmologist at a hospital for specialist care. A total of 24,892 children underwent ocular health screening. Of those, 1,865 (7.5%) failed the primary screening; 658 (2.6%) were false positives (35.3% of those who failed screening), and 1,207 (4.8%) true positives. The most frequently observed ocular diagnoses were allergic conjunctivitis (3.11%) and strabismus (0.26%). Refractive error was very rare (0.18%). The WHO primary eye care curriculum provides existing health personnel with an approach to school-based vision screening that uses a standardized checklist and low-cost resources. In our study cohort, results indicated a low frequency of refractive error; the overwhelming majority of ocular problems could be identified on visual inspection.

Cervical cancer screening in HIV-endemic countries: An urgent call for guideline change

Women living with HIV (WLWH) are at an increased risk of developing HPV-related high grade cervical dysplasia and cervical cancer. Prior World Health Organization (WHO) screening guidelines recommended starting screening at age 30. We assessed characteristics of women diagnosed with cervical cancer to further inform and refine screening guidelines. We prospectively enrolled women diagnosed with cervical cancer from January 2015 to March 2020 at two tertiary hospitals in Gaborone, Botswana. We performed chi-square and ANOVA analyses to evaluate the association between age upon diagnosis and HIV status, CD4 count, viral load, and other sociodemographic and clinical factors. Data were available for 1130 women who were diagnosed with cervical cancer and 69.3% were WLWH. The median age overall was 47.9 (IQR 41.2–59.1), 44.6 IQR: 39.8 – 50.9) among WLWH, and 61.2 (IQR 48.6–69.3) among women living without HIV. There were 1.3% of women aged <30 years old, 19.1% were 30–39 and 37.2% were 40–49. Overall, 20.4% (n = 231) of cancers were in women <40 years. Age of cervical cancer diagnosis is younger in countries with higher HIV prevalence, like Botswana. Approximately 20% of the patients presented with cancer at <40 years of age and would have likely benefited from screening 10 years prior to cancer diagnosis to provide an opportunity for detection and treatment of pre-invasive disease.

Intimate-partner violence and its association with symptoms of depression, perceived health, and quality of life in the Himalayan Mountain Villages of Gilgit Baltistan.

Study objectivesWe aimed to estimate the prevalence of intimate partner violence (IPV) and associated risk factors in married women in rural villages of Gilgit Baltistan in Pakistan.MethodsA cross-sectional design to assess the magnitude and factors associated with IPV in a random sample of 789 married women aged 18–49 years. A World Health Organization screening instrument was used to assess the presence of IPV in the previous 12 months. A locally validated instrument was adopted to identify self-reported symptoms of major depression according to the DSM IV. Trained nurses obtained socio-demographic and reproductive history through structured interviews. Bivariate and multivariable logistic regression analyses were used to estimate prevalence and identify significant predictors of IPV.ResultsThe mean age of the participants was 38.3 years (SD: ±12.8). The prevalence of IPV in women was 22.8% (95% Confidence Interval: 20.0–25.9), 18.5% in pregnant women (95% CI: 11.7–27.9) and significantly associated with depression in 55.1% of IPV cases. Husband education level (college/higher) (Adjusted Odds Ratio: 0.40; 95%CI: 0.22–0.70) and high household income (AOR: 0.44; 95% CI: 0.29–0.68) were protective against IPV. Increase in age (AOR;1.02; 95% CI: 1.01–1.02) and poor relationship with mother-in-law increased the risk of IPV (AOR = 2.85; 95% CI: 1.90–4.28). IPV was positively associated with symptoms of depression (AOR = 1.97; 95% CI:1.39–2.77), poor perceived quality of life (AOR = 3.54; 95% CI: 1.90–6.58) and poor health (AOR = 2.74; 95% CI: 1.92–3.92).ConclusionIPV is substantial public health burden significantly associated with depressive symptoms, poor perceived health and the quality of life.

Prevalence and associated risk factors for intimate partner violence (IPV) in the Himalayan mountain villages of Pakistan

IntroductionIntimate partner Violence (IPV) against women includes all actions that violate one’s sense of self, physical body and sense of trust and involves episodes of violence of physical, psychological (emotional), or sexual nature, perpetrated by a current or former intimate partner.ObjectivesWe estimated the prevalence of and risk factors for intimate partner violence (IPV) in the Himalayan mountain villages of Gilgit Baltistan in Pakistan.MethodsWe employed a cross-sectional study to randomly select ever married women (n=789) aged 18-49, in Pakistan. We used an adapted World Health Organization screening instrument to assess women’s experience of IPV in the previous 12 months. We used an indigenous validated instrument assess self-reported symptoms of major depression according to the DSM IV. Multivariable logistic regression analysis was used to identify significant predictors of IPV using adjusted odds ratio (AOR) with 95% confidence intervals (CI).ResultsThe overall prevalence of IPV was 22.8% (95% CI: 20.0-25.9). Women exposed to IPV were less likely to have husbands educated at a college or a higher (AOR: 0.40; 95%CI: 0.22-0.70), household income in the middle or the highest tertile (AOR: 0.44; 95%CI: 0.29-0.68), and were more likely to have poor or very poor relationship with their mother in law (AOR=2.85; 95% CI: 1.90-4.28), to have a poor quality of health (AOR= 2.74; 95% CI: 1.92-3.92) poor quality of life (AOR= 3.54; 95%CI: 1.90-6.58), and higher odds of experiencing depressive symptoms (AOR=1.97; 95%CI:1.39-2.77).ConclusionsIPV is a substantial public health burden in Himalayan mountain villages and merits serious attention.DisclosureNo significant relationships.

Determining the prevalence of tuberculosis in emergency departments in the Eastern Cape region of South Africa and the utility of the World Health Organization tuberculosis screening tool

Background. South Africa (SA) faces a significant tuberculosis (TB) burden complicated by high rates of HIV-TB co-infection. In SA, emergency departments (EDs) play an important role in screening for TB. Objectives. To determine the prevalence of TB in the ED and the effectiveness of the World Health Organization (WHO) TB screening tool. Methods. This was a cross-sectional observational study, conducted in the ED at Livingstone Hospital, Port Elizabeth, from 4 June to 15 July 2018. All patients aged >18 years and able to consent were administered the WHO TB screening questions and underwent a point-of-care HIV test and demographic data collection. Patients were followed up for 1 year and tracked in the National Health Laboratory Service database to determine TB status using laboratory testing. Results. Over the study period, 790 patients were enrolled. Overall, 121 patients (15.3%) were TB-positive, with 46 (38.0%) diagnosed after presenting to the ED and 75 (62.0%) with a previous TB history determined by self-report or confirmed laboratory testing. A greater proportion of the TB-positive patients were HIV-positive (49.6%) compared with the TB-negative population (24.8%). TB-positive individuals were more likely to present to the ED with a chief complaint of shortness of breath (SoB) (18.2%) compared with the TB-negative population (10.5%). Overall, the WHO TB screening tool had poor sensitivity (46.5%) and specificity (62.5%) for identifying TB-positive patients in the ED. A multiple logistic regression analysis, controlled for age and sex, showed HIV status (odds ratio (OR) 2.81; p <0.001) and SoB (OR 2.19; p <0.05) to be significant predictors of TB positivity. Adding positive HIV status and a presenting complaint of SoB increased sensitivity to 78.3%. Conclusions. EDs in SA face a high burden of TB. While WHO screening guidelines identify some of these patients, including routine HIV testing in the ED could significantly affect the number of TB diagnoses made.

Recommendations for a More Organized and Effective Approach to the Early Detection of Pancreatic Cancer From the PRECEDE (Pancreatic Cancer Early Detection) Consortium

Recommendations for a More Organized and Effective Approach to the Early Detection of Pancreatic Cancer From the PRECEDE (Pancreatic Cancer Early Detection) Consortium

The utility of a modified W.H.O. TB screening tool among children at a Botswana child welfare clinic

Background: In high TB/HIV settings, the increased risk for TB amongst children exposed to HIV has been established through biomedical tests. Screening HIV exposed children for TB can improve early childhood TB detection and treatment.&#x0D; Objective: This study assessed the utility of a modified World Health Organization (WHO) tool by including HIV variables, to determine TB exposure amongst HIV exposed children presenting to a “Well Child” Clinic (CWC).&#x0D; Methods: Clinical data were obtained from medical records and/or from the caregivers of children presenting to CWC. Data was analyzed to explore factors associated with positive screening for TB, including being exposed to HIV and current HIV status.&#x0D; Results: Five percent (55/1100) screened reported a close TB contact and 21% (n=231) had positive TB symptom screen. History of close TB contact was a risk factor for positive screening for TB symptoms (OR 1.89 CI 1.05-3.4) while being HIV negative was protective (OR 0.3, Cl 0.19-0.62). HIV exposure was associated with increased risk of TB exposure (OR 2.9 CI 1.61-5.19).&#x0D; Conclusion: Integrating HIV variables in the existing WHO screening tool for childhood TB can be useful in early detec- tion and treatment of TB in HIV exposed children in resource limited settings.&#x0D; Keywords: Childhood TB screening; HIV Exposure screening; TB/HIV integration.

The utility of a modified WHO TB screening tool among children at a Botswana child welfare clinic.

In high TB/HIV settings, the increased risk for TB amongst children exposed to HIV has been established through biomedical tests. Screening HIV exposed children for TB can improve early childhood TB detection and treatment. This study assessed the utility of a modified World Health Organization (WHO) tool by including HIV variables, to determine TB exposure amongst HIV exposed children presenting to a "Well Child" Clinic (CWC). Clinical data were obtained from medical records and/or from the caregivers of children presenting to CWC. Data was analyzed to explore factors associated with positive screening for TB, including being exposed to HIV and current HIV status. Five percent (55/1100) screened reported a close TB contact and 21% (n=231) had positive TB symptom screen. History of close TB contact was a risk factor for positive screening for TB symptoms (OR 1.89 CI 1.05-3.4) while being HIV negative was protective (OR 0.3, Cl 0.19-0.62). HIV exposure was associated with increased risk of TB exposure (OR 2.9 CI 1.61-5.19). Integrating HIV variables in the existing WHO screening tool for childhood TB can be useful in early detection and treatment of TB in HIV exposed children in resource limited settings.

Population Health Screening after Environmental Pollution

Following environmental pollution exposure, calls to screen the population for disease or disease markers are often made. Population screening is a cross-sectional review of a population to find latent cases or biomarkers of disease that indicate the possibility of disease development; it differs from environmental screening or an epidemiological survey. Recognized standard approaches have been developed over 60 years to ensure quality and effectiveness in complex programs. We surveyed the literature for papers on health screening following environmental exposures and checked them for reference to accepted criteria such as those of Wilson and Jungner. We applied these criteria to three situations covering source/hazard (arsenic contaminated land), pathway/exposure (radiation release), and receptor/disease (lead poisoning). We identified 36 relevant papers. Although across the papers the whole range of criteria were addressed, no paper or program utilized recognized criteria. Issues and gaps identified included limited strategic approaches, lack of treatment, environmental prevention being seen as the screening outcome instead of treatment of identified individuals, and programs which did not fit the World Health Organization screening description. Robust discussion in the literature is needed to consider the organization and role of health screening following environmental exposures.

Secondary findings from next-generation sequencing: what does actionable in childhood really mean?

PurposeWe aimed to assess the definition of actionability of secondary findings in childhood, using a screening framework. MethodsFor 31 disorders on the American College of Medical Genetics and Genomics SF v.2.0 list, World Health Organization screening criteria were applied to assess actionability in childhood. ResultsThe age of onset was variable. We categorized disorders based on the proportion of cases that presented in childhood: rare (n = 6), fewer than half the cases (n = 9), the majority of cases (n = 12), or unclear (n = 4). The age at initiation of intervention was based on the youngest age of onset reported, not evidence of the benefit of early intervention. For 15 disorders, guidelines were supported by a moderate quality of evidence for at least one recommendation. Only tuberous sclerosis complex had recommendations based on high-quality evidence. All others were based on evidence of low or very low quality. ConclusionWe propose that actionability in childhood should be based on the proportion of cases that manifest in childhood and the quality of the evidence supporting intervention recommendations. Ideally, disclosure in childhood would be limited to disorders for which a majority of cases present in childhood and for which interventions are supported by evidence of at least moderate quality (i.e., multiple endocrine neoplasia type 2, retinoblastoma, tuberous sclerosis complex, Marfan syndrome, and Wilson's disease).

Prevalence, Demographic Profile, and Psychological Aspects of Epilepsy in North-Western India: A Community-Based Observational Study

Aims: This study was undertaken to determine the prevalence of active epilepsy, assess the sociodemographic profile, and psychological aspects of epilepsy in the Jaipur district of Rajasthan, India. Methods: We conducted a community-based, cross-sectional observational study covering both rural (n = 165,660) and urban (n = 179,142) populations of Jaipur district using a house-to-house survey. An adapted, pre-designed World Health Organization screening questionnaire was used to identify the cases. Those confirmed by neurologists as true seizures were included in the study. Cases were classified as per the International League against Epilepsy recommendation. Global Mental Health Assessment Tool electronic questionnaire was used to analyze psychological aspects of cases. The caregivers of the patients participated in the knowledge, attitude, and practice (KAP) survey. Results: A total of 380 patients (258 men, 122 women) were identified with active epilepsy. The estimated prevalence of active epilepsy was 1.1/1,000 population and 71% of cases belonged to low socioeconomic classes. Primary treatment gap was documented in 18.8% of cases in our study, 38% of cases were non-compliant to treatment with poorer compliance in those on pol-therapy, 76% had some psychiatric disorder, anxiety and depression being the commonest, and positive family history of epilepsy was found in 4.7%. KAP survey revealed that only 15% of the respondents believed that epilepsy is non-curable, 74% denied its infectious nature, 26% believed that epilepsy occurs due to past sins, and 81% said that they would not marry persons with epilepsy. Conclusion: A relatively low prevalence (1.1/1,000) of active epilepsy and a smaller primary treatment gap (18.8%) was found in our study population. Almost three-fourth of cases had an associated psychological problem, Though caregivers were aware of the nature of disease, majority would not prefer to marry a person suffering from epilepsy.

International variation in programmes for assessment of children's neurodevelopment in the community: Understanding disparate approaches to evaluation of motor, social, emotional, behavioural and cognitive function.

Few areas of medicine demonstrate such international divergence as child development screening and surveillance. Many countries have nationally mandated surveillance policies, but the content of programmes and mechanisms for delivery vary enormously. The cost of programmes is substantial but no economic evaluations have been carried out. We have critically examined the history, underlying philosophy, content and delivery of programmes for child development assessment in five countries with comprehensive publicly funded health services (Denmark, Finland, Norway, Scotland and Sweden). The specific focus of this article is on motor, social, emotional, behavioural and global cognitive functioning including language. Variations in developmental surveillance programmes are substantially explained by historical factors and gradual evolution although Scotland has undergone radical changes in approach. No elements of universal developmental assessment programmes meet World Health Organization screening criteria, although some assessments are configured as screening activities. The roles of doctors and nurses vary greatly by country as do the timing, content and likely costs of programmes. Inter-professional communication presents challenges to all the studied health services. No programme has evidence for improved health outcomes or cost effectiveness. Developmental surveillance programmes vary greatly and their structure appears to be driven by historical factors as much as by evidence. Consensus should be reached about which surveillance activities constitute screening, and the predictive validity of these components needs to be established and judged against World Health Organization screening criteria. Costs and consequences of specific programmes should be assessed, and the issue of inter-professional communication about children at remediable developmental risk should be prioritised.

Sensitivity and Specificity of Body Mass Index as a Marker of Obesity in Elderly Patients on Hemodialysis

Diagnosing obesity by body mass index (BMI) may not be reliable in elderly individuals due to the changes in body composition. We aimed to analyze the accuracy of BMI thresholds by World Health Organization (WHO) and Nutrition Screening Initiative (NSI) to diagnose obesity in elderly patients on hemodialysis (HD). Multicenter cross-sectional study. Six dialysis facilities. 169 elderly on chronic HD (70.4 ± 7.1 years; 63.9% men). Total body fat percentage (BF%) was assessed by the sum of skinfold thicknesses and abdominal fat by waist circumference (WC). Both were used as reference to test the specificity and sensitivity of BMI thresholds (WHO: ≥30 kg/m(2); NSI: >27 kg/m(2)). The prevalence of obesity according to NSI-BMI, WHO-BMI, BF%, and WC thresholds were 31%, 13%, 27%, and 29.6% in men, respectively, and 36%, 15%, 13%, and 75% in women. Compared to BF%, the sensitivity of NSI-BMI was moderate (65.5%) for men and high (100%) for women, whereas that of WHO-BMI was low (31%) for men and high (87.5%) for women. Compared with WC, NSI-BMI had good (75%) sensitivity for men and moderate (47.8%) for women, whereas WHO-BMI had moderate (43.8%) sensitivity for men and low (19.6%) for women. The best agreement with BF% was observed for NSI-BMI in men (kappa = 0.46) and for WHO-BMI in women (kappa = 0.80). For WC, the best agreement was for WHO-BMI for men (kappa = 0.63) and NSI-BMI for women (kappa = 0.31). BMI thresholds do not accurately diagnose adiposity in elderly on HD. Therefore, using BMI may lead to misclassifications in this segment population.

NHS Health Checks--a naked emperor?

We briefly review here the evidence that the NHS Health Checks (NHSHC) programme represents an ineffective strategy and is currently wasting scarce resources. The NHSHC programme invites everyone in England aged 40–74 without cardiovascular disease (CVD) for a check every 5 years. The NHSHC website advertises that health checks can • prevent heart disease, diabetes, kidney disease stroke and dementia, • provide support and advice to help individuals manage and reduce their risk of future disease.1 However, the NHSHC programme fails to achieve both of these primary objectives. Furthermore, it relies on weak concepts, denies strong scientific counter-evidence and ignores persistent implementation issues. The 10 World Health Organization (WHO) Screening Criteria have been evaluated and refined over four decades.2 They remain a valuable test of any screening proposal (Table 1). This is crucial, because all screening has the potential for harm, and screening science can be counterintuitive.3 The NHSHC programme can be assessed against each of the 10 WHO Criteria. These cover the disease targeted, the test used and the treatment programme. We assess each of these areas in turn and whether NHSHC pass or fail on each criterion.

Derivation of a tuberculosis screening rule for sub-Saharan African prisons.

Lusaka Central Prison, Zambia. To derive screening rules for tuberculosis (TB) using data collected during a prison-wide TB and human immunodeficiency virus (HIV) screening program. We derived rules with two methodologies: logistic regression and classification and regression trees (C&RT). We evaluated the performance of the derived rules as well as existing World Health Organization (WHO) screening recommendations in our cohort of inmates, as measured by sensitivity, specificity, and positive and negative predictive values. The C&RT-derived rule recommended diagnostic testing of all inmates who were underweight (defined as body mass index [BMI] < 18.5 kg/m(2)] or HIV-infected; the C&RT-derived rule had 60% sensitivity and 71% specificity. The logistic regression-derived rule recommended diagnostic testing of inmates who were underweight, HIV-infected or had chest pain; the logistic regression-derived rule had 74% sensitivity and 57% specificity. Two of the WHO recommendations had sensitivities that were similar to our logistic regression rule but had poorer specificities, resulting in a greater testing burden. Low BMI and HIV infection were the most robust predictors of TB in our inmates; chest pain was additionally retained in one model. BMI and HIV should be further evaluated as the basis for TB screening rules for inmates, with modification as needed to improve the performance of the rules.

Prevalence and clinical characteristics of active epilepsy in southern Han Chinese

PurposeTo investigate the prevalence and clinical characteristics of active epilepsy in southern Han Chinese. MethodA door-to-door survey about epilepsy was conducted in communities identified by random cluster sampling among 20 villages and 3 communities of Yueyang city. A questionnaire for epilepsy based on the World Health Organization screening questionnaire was used. A final diagnosis of epilepsy was made by neurology specialists with the support of head magnetic resonance imaging (MRI), computed tomography (CT), and electroencephalography (EEG) if available. The prevalence, clinical characteristics, and treatment gap were analyzed in patients with active epilepsy within the past year and the past 5 years. ResultsActive epilepsy was identified in 91 patients within the past year and 117 patients within the past 5 years. The one-year prevalence was 2.8‰, and the five-year prevalence was 3.7‰. The prevalence for epilepsy active within the last year and the last five years was significantly higher in rural areas than in urban areas (P<0.05). Secondary generalized tonic–clonic seizures (53.8%) were the most common seizure type in patients whose epilepsy had been active in the last year. 34.1% of patients were diagnosed with structural or metabolic epilepsy. The most common cause for epilepsy was cerebrovascular disease (32.3%), followed by traumatic brain injury (29.0%). The treatment gap was 93.4%. ConclusionThe prevalence of epilepsy active within the last one and five years was higher in rural areas than in urban areas of Yueyang city. A large treatment gap exists in this area and a rational intervention strategy is needed.