Table 2. Data type and definition used to classify 57 compliance papers included in the analysis.

Longitudinal compliance data was reported by both longitudinal studies (cohort, randomised controlled trials) and cross-sectional studies. Abbreviations: CDD–community drug distributor, DOT–directly observed treatment.

Compliance Data Type	Study Type	Description
Individual–annually surveyed (n = 3)	Cohort, randomised controlled trial	Longitudinal, individually linked, compliance data across >2 time points. Recorded DOT during annual surveys either by CDD, or self-reported by participant. Focus: individual level.
Individual–self-reported (time-specific or overall) summary (n = 22)	Cross-sectional	Longitudinal compliance data over defined/undefined time-period. Self-reported compliance by an individual at one time-point, looking back in time e.g., self-reported compliance to 5 available MDA rounds. Focus: individual level.
Repeated cross-sectional (n = 32)	Cross-sectional	Compliance data at each round of MDA for a set cohort (e.g., village or district), repeatedly surveyed over several time points population repeatedly sampled. Individuals not consistently present across all time points are not removed. Focus: population level.
Cross-sectional (n = 32)	Cross-sectional	Compliance data for a single round of MDA. Focus: population level.