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Utility of the WHO ten questions screen for disability detection in a rural community -- the north Indian experience.
Journal of Tropical Pediatrics. 2007 Dec; 53(6):383-387.The utility of the WHO Ten Questions Screen (TQS) was studied in a rural community of North India. The study was done in three villages, in two phases. In phase 1, the TQS was administered to parents of children aged between 2 and 9 years, during a house-to-house survey. In phase 2, all children screened positive and a random sample of 110 screened negative were clinically evaluated in detail. The total population of the three villages was 5830 with 1763 children aged between 2 and 9 years. Seventy-six children were positive on the TQS, of these, 38 were found to have significant disability, 18 had protein energy malnutrition and 19 were found normal on clinical evaluation. All the 110 screen-negative children were normal. Significantly larger numbers of boys were positive on TQS as compared to girls [Odd Ratio (OR) 1.5]. The sensitivity of the TQS for significant disability was 100%; the positive predictive value was 50% and was higher for boys than for girls. Of the 50% children classified as false positive 23% had mild delays due to malnutrition. The estimated prevalence of disability was 16/1000. The TQS was found to be a sensitive tool for detection of significant disabilities among children 2-9 years of age. The low-positive predictive value would lead to over referrals but a large number of these children would benefit from medical attention. (author's)
Vitamin A deficiency and increased mortality among human immunodeficiency virus-infected adults in Uganda.
Nutrition Research. 2003 May; 23(5):595-605.The specific aims of the study were to determine the prevalence of vitamin A deficiency and to examine the relationship between vitamin A deficiency and mortality among human immunodeficiency virus (HIV)-infected adults in sub-Saharan Africa. A prospective cohort study was conducted at the outpatient clinic of Mulago Hospital, Kampala, Uganda, among HIV-infected adults enrolled in the placebo arms of a randomized clinical trial to prevent Mycobacterium tuberculosis infection. Of 519 subjects at enrollment, 186 (36%) had serum vitamin A concentrations consistent with deficiency (<1.05 µmol/L). During follow-up (median 17 months), the mortality among subjects with and without vitamin A deficiency at enrollment was 30% and 17%, respectively (P = 0.01). In a multivariate model adjusting for CD4+ lymphocyte count, age, sex, anergy status, body mass index, and diarrhea, vitamin A deficiency was associated with a significantly elevated risk of death [relative risk (RR) = 1.78, 95% confidence interval (CI) 1.2-2.6]. Vitamin A deficiency is common among HIV-infected adults in this sub-Saharan population and is associated with higher mortality. (author's)