Table 3.

Percent decreases in ${\mathrm{PM}}_{2.5}$, BC, and CO exposure associated with the LPG intervention.

Model type	Details	Percent decrease in ${\mathrm{PM}}_{2.5}$ exposure	Percent decrease in BC exposure	Percent decrease in CO exposure
		Estimate (CI)	Estimate (CI)	Estimate (CI)
Between groups	—	61 (59, 63)	62 (60, 64)	81 (78. 83)
Before and after	Control	15 (12, 19)	17 (13, 20)	19 (12, 26)
	Intervention	68 (66, 69)	69 (67, 70)	86 (84, 87)
Comparison-of-changes	Overall	62 (59, 64)	62 (59, 64)	82 (80, 85)
	Visit P1	62 (59, 65)	63 (61, 66)	83 (80, 86)
	Visit P2	61 (58, 64)	60 (57, 63)	81 (78, 84)

Note: —, no data; BC, black carbon; CI, confidence interval; CO, carbon monoxide; LPG, liquefied petroleum gas.