Of these, 12 were excluded from the present study because of missing data; the current study population included 247 patients with a complete data set.
An additional 296 patients were excluded because of missing dates for age, study entry, or study exit.
In addition, we might have missed studies because of the applied date restriction and limitation of our search to three databases.
*Number in each demographic characteristic does not add to the total number of study subjects because of missing data; the number of study subjects with data missing for age group, marital status, education level, and residential area are 87, 184, 17, and 1,361, respectively.
The reliability of fatigue was not comparable, because of missing values in our study sample.
*Categories may not sum to the total because of missing data Prior to study implementation, information and training sessions were held with the staff of Medicine, Pediatrics, Surgery, and Obstetrics and Gynecology departments.
The final sample consisted of 557 doctors (277 men and 280 women), as the analysis of change in the core study variables led to the exclusion of doctors with no follow-up information in t2 and t3, and a number of doctors were excluded because of missing values in core study variables in t2 and t3.
Probability of survival was greatest for those commencing ART between age 2 and 9. Mortality was high in children under 2 years and children above 10 years and for children at WHO stages 3 and 4. As expected, lower hemoglobin values were associated with higher mortality although the association was not statistically significant, possibly because of missing values for this study variable.
Our study also has limitations that are inherent to retrospective studies because of missing information.
The Protein Data Bank files downloaded from the World Wide Web repository are often not perfect for docking studies because of missing hydrogen atoms, presence of multiple molecules, added waters, and related problems.
