Table 1.

Summary of ascertainment of drug use approaches by study site

Event	Source	Sites
		Asembo	Manhiça	Nanoro
Drug exposure	Retrospective Self-report	√	√	√
	Health Facility Treatment records	√	√	√
	Outpatient visit database		√
	Prospective Self-report	√
Pregnancy outcomes	Health facility assessment	√	√	√
	Home base assessment	√		√