Biomass-fuelled improved cookstove intervention to prevent household air pollution in Northwest Ethiopia: a cluster randomized controlled trial

Table 2 Effect of the improved cookstove intervention on the concentration of household air pollution in micrograms per cubic meter of sampled air

Parameters		B	S.E.	95% Wald C.I.		P value
Parameters		B	S.E.	Lower	Upper	P value
Treatment arm	Intervention	− 342.992	3.7307	− 350.304	− 335.680	.0001*
Treatment arm	Control	1
Baseline indoor PM_2.5 concentration in μg/m³		0.765	0.0078	0.750	0.781	.0001*
Location of main cooking quarter	Inside living house	1
Location of main cooking quarter	Separate kitchen	− 6.994	4.0553	− 14.942	0.954	.085
Secondary cookstove type	Traditional	1
Secondary cookstove type	Improved	− 16.976	7.6349	− 31.941	− 2.012	.026*
Frequency of injera baking event	Everyday	1
Frequency of injera baking event	Every other or more days	− 42.656	6.7964	− 55.976	− 29.335	.0001*

ISSN: 1347-4715