Table 6:

Percent change by variable in personal and kitchen 24-hour average BC (μ/m³) concentrations. Resulting values from two multivariable models, including random effects, one for personal exposure and one for kitchen concentration.

	Personal		Kitchen
Variable	Percent Change in Geometric Mean (95% CI)	p	Percent Change in Geometric Mean (95% CI)	p
Electricity		0.08		0.07
Presence of electricity	(Reference)		(Reference)
No electricity	91.4% (31%, 180%)		51.0% (−54%, 138%)
Kerosene (for lighting)		0.04		0.05
Presence of kerosene	(Reference)		(Reference)
No kerosene	−30.6% (−51%, 2%)		−30.7% (−52%, 1%)
Asset Index		0.75		0.74
High	(Reference)		(Reference)
Low	5.5% (−24%, 46%)		6.9% (−28%, 59%)
Stove Type		<.001		<.001
Justa	(Reference)		(Reference)
Justa + Traditional	−21.5% (−42%, 6%)		−23.3% (−45%, 6%)
Traditional	193.3% (123%, 286%)		351.5% (337%, 504%)
Income Source(s)		0.32		0.15
Multiple sources	(Reference)		(Reference)
Income only through agriculture	11.2% (−10%, 38%)		18.2% (−6%, 49%)
Kitchen Enclosure		0.85		0.03
Fully enclosed	(Reference)		(Reference)
Open	2.9% (−25%, 42%)		−32.7% (−53%, 2%)
Kitchen Location		0.80		<.01
Inside main living area	(Reference)		(Reference)
Outside under veranda/porch	11.0% (−61%, 317%)		669.7% 143%, 2337%)
Separate building	−15.6% (−49%, 40%)		−7.4% (48%, 65%)
Separate room attached to house	−18.0% (−50%, 33%)		3.6% (−41%, 80%)
Cooking Time		0.80		0.47
0-14 hours/wk	(Reference)		(Reference)
14-28 hours/wk	2.9% (−26%, 43%)		−20.9% (−44%, 11%)
28-42 hours/wk	9.3% (−25%, 58%)		−10.3% (−39%, 33%)
42-128 hours/wk	−25.4% (−68%, 75%)		−27.2% (−73%, 88%)
Stove Use Monitoring-Time ± 28°C		<.01		0.21
0-60%	(Reference)		(Reference)
60-80%	−19.5% (−46%, 1%)		17.7% (−8%, 51%)
80-100%	20.4% (−13%, 67%)		35.8% (−4%, 93%)
Season		<.001		0.03
Dry	(Reference)		(Reference)
Rainy	61.5% (35%, 93%)		23.5% (3%, 49%)
Education		0.62		0.18
No school	(Reference)		(Reference)
Compulsory schooling	−17.1 (−52%, 45%)		−44.9 (−72%, 8%)
Greater than 6 years	7.6 (−55%, 158%)		−26.6 (−73%, 110%)