BackgroundAnthropometric measurements are a non invasive, inexpensive, and suitable method for evaluating the nutritional status in population studies with relatively large sample sizes. However, anthropometric techniques are prone to errors that could arise, for example, from the inadequate training of personnel. Despite these concerns, anthropometrical measurement error is seldom assessed in cohort studies. We describe the reliability and challenges associated with measurement of longitudinal anthropometric data in a cohort of West African HIV+ adults .MethodsIn a cohort of patients initiating antiretroviral treatment in Mali, we evaluated nutritional status using anthropometric measurements(weight, height, mid-upper arm circumference, waist circumference and triceps skinfold). Observers with no prior experience in the field of anthropometry were trained to perform anthropometrical measurements. To assess the intra- and inter-observer variability of the measurements taken in the course of the study, two sub-studies were carried out: one at the beginning and one at the end of the prospective study. Twelve patients were measured twice on two consecutive days by the same observer on both study occasions. The technical error of measurement (TEM) (absolute and relative value), and the coefficient of reliability (R) were calculated and compared across reliability studies.ResultsAccording to the R and relative TEM, inter-observer reliabilities were only acceptable for height and weight. In terms of intra-observer precision, while the first and second anthropometrists demonstrated better reliability than the third, only height and weight measurements were reliable. Looking at total TEM, we observed that while measurements remained stable between studies for height and weight, circumferences and skinfolds lost precision from one occasion to the next.ConclusionsHeight and weight were the most reliable measurements under the study's conditions. Circumferences and skinfolds demonstrated less reliability and lost precision over time, probably as a result of insufficient supervision over the entire length of the study. Our results underline the importance of a careful observer's selection, good initial preparation, as well as the necessity of ongoing training and supervision over the entire course of a longitudinal nutritional study. Failure to do so could have major repercussions on data reliability and jeopardize its utilization.

Our objective was to determine the prevalence and identify the factors that influence antiretroviral therapy (ART) adherence among patients in Bamako and Ouagadougou. A cross-sectional study was conducted among 94 men and 176 women receiving ART. Data were collected through questionnaires and chart reviews. Logistic regressions were performed to isolate determinants of adherence. Overall, 58% of the patients were adherent, but there were differences in the levels of adherence according to country and treatment site. Sociodemographic factors were not associated with adherence. However, social characteristics such as having children, in Ouagadougou, or being a housewife and not planning to have a child in the next year, in Bamako were associated with adherence. Time on ART was negatively associated with adherence in both countries with decline occurring later in Bamako. Levels of adherence are inadequate particularly among more experienced patients. Further adherence research and monitoring using longitudinal designs are warranted to assess the extent to which adherence is declining with time on treatment.

No abstract

No abstract

The objective of this study was to investigate factors correlated with late treatment initiation in a cohort of patients starting treatment in Mali, West Africa, while focusing on the role of sex/gender. This study consisted of a cross-sectional analysis of baseline data from a prospective, observational cohort of patients initiating antiretroviral treatment in Mali. Patient data were analyzed with a gender perspective to examine factors correlated with late treatment initiation, defined as having a CD4 count below 100 cells/µl. Aday and Andersen's conceptual framework of access to medical care was used to classify baseline participant characteristics associated with late treatment initiation. Logistic regression was used to evaluate the modifying effect of sex/gender. Results show that 39% of patients initiated treatment late; significantly more of these were men than women. Sex/gender, marital status, and education were associated with late treatment initiation. Unmarried men and uneducated women were significantly more likely to initiate treatment late. Programs need to target unmarried men while being cognizant that uneducated women are arriving late as well.