Ph: P-value of Q-test for heterogeneity identification; I2 index: a quantitative measurement which indicates the proportion of total variation in study estimates that is due to between-study heterogen
*A negative correlation coefficient implies more benefit as the tested independent variable increases.†For each of these quality components, studies were dichotomized into high or low quality and used
The data is collected from all Government schools as part of theadministration of student absences. Attendance rate is calculated on the number of actual full-time equivalentstudent-days attended by s
Variable are ranked on the basis of combined AUROC, information gain, and odds ratio (OR). ORs are indicated along with their 95% confidence intervals (CI).