Cohort analysis4: Crude and Adjusted Risk Ratios for attrition through 6 and 12 months.

1Cohort attrition % estimated as 100 - (number of patients on ART through 6 months/number starting cohort at baseline).2Cohort attrition % estimated as 100 - (number of patients on ART through 12 months/number starting cohort at baseline).3Adjusted for facility type (primary, secondary, or tertiary), urban/rural, cohort start year, and cumulative number of patients seen in care.4All analyses adjusting for within-site correlation using generalized estimating equations.