Table 3.

Monitoring data collection activities ongoing throughout the trial

Measurement	Monthly (LHW)	Quarterly (Monitoring Team)
Adherence by pill counta	i
Adherence by self-reported frequencyb		i
Side effects		X
Supplement acceptability		i
Morbidity		X
Mortality		X

X: all participants; i: intervention group only

^aAdherence by pill count defined as number of tablets apparently consumed/number of possible supplements consumed given the number of days enrolled in the study

^bAdherence options by self-report during preconception include twice weekly, intermittently, or not at all