Table 1.

Indicators and metrics used to measure intervention fidelity and adherence.

Measure	Indicator	Metrics of assessment	Data source
Intervention Fidelity	Continuous LPG fuel delivery	# days between request for refill (or identification of refill need by fieldworkers) and LPG cylinder delivery	Surveys
		% intervention participants reporting traditional stove use because they ran out of LPG
	Timeliness of repairs	# and types of repairs made	Surveys
		# days between problem identification and successful repair
		# repairs per intervention participant
	Behavioral reinforcement of exclusive LPG use	% intervention participants who reported using traditional stove due to problems or concerns with LPG	Surveys
		# times intervention participants reported concerns with LPG
		% intervention participants with observed traditional stove use who later received behavioral reinforcement
		# days between observation of traditional stove use and reinforcement visit
Intervention Adherence	Disuse of traditional stoves in intervention households*	% of days with traditional stove use	SUMs
		% intervention households with no traditional stove use
		% intervention households with < 1 day of traditional stove use per month
		# days with traditional stove use per month
		Average minutes of traditional stove use per day
		% intervention households where traditional stove use was ever observed	Observations of traditional stove use
		# observations of traditional stove use per intervention household
		% observations indicating traditional stove use
	LPG stove use by intervention participants	% intervention participants who reported exclusive LPG use across the study visits	Surveys
		% days with LPG stove use	SUMs
		# days with LPG stove use per month
		Minutes of LPG stove use per day
	Biomass stove use by control participants	% control participants who reported exclusive biomass use, mixed use of biomass and LPG, or exclusive LPG use across the study visits	Surveys
		% days with biomass stove use	SUMs
		Minutes of biomass stove use per day
	Impact of temporary or permanent moves on adherence	% intervention participants who used biomass stoves in a new permanent home or temporary home	Surveys
		% control participants who used exclusively clean fuel in new permanent or temporary home
		# days in the new permanent or temporary home

* Note that we refer to intervention adherence at the household level given that the SUMs data do not distinguish which household member(s) are using the stove during flagged use events.