Table 1.

Search terms and inclusion/exclusion criteria

Search terms	“community health worker*” OR “volunteer health worker*” OR “lay health worker*” OR “lay health advis*r” OR “lay health advis*rs” OR “lay health educator*” OR “village health worker*” OR “village health volunteer*” OR “lady health worker*” OR “community health volunteer*” OR “community health agent*” OR “community health promotion” OR “community health promoter*” OR “community health aide*” OR “health assistant worker*” OR “home based care” OR “home community based care*” OR “community health agent*” OR “health surveillance assistant*” OR “community care giver*” OR “community caregiver” OR “accredited social health activists” OR “asha” OR “mitanins” OR “mitanin” OR “family health team*” OR “family health program*” OR “integrated community case management” OR “ICCM”
Inclusion/exclusion criteria	English-language publications
	Low- and middle-income countries
	Empirical findings, reviews, trial protocols, extended analyses, scientific letters and conference proceedings
	Not the following:
	• Editorials, letters, short commentaries, news items
	• Traditional birth attendants and traditional healers
	• Facility-based cadres, such as lay counsellors
	• Family care givers, peer supporters or counsellors, expert patients
	• Community medicine retailers/sellers
	• Community rehabilitation workers
	• CHWs as field workers for research
	• CHWs as a recommendations but not a focus of the findings
	• Household surveys describing utilization of different providers, including CHWs