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. Author manuscript; available in PMC: 2014 May 1.
Published in final edited form as: Atmos Environ (1994). 2013 Jan 17;70:179–185. doi: 10.1016/j.atmosenv.2012.12.044

Table 4.

Predictors of indoor PM2.5 in public and slum housing, reported by households (n=169)

Partial Correlations
Predictor β SEa P 95% CI R2 (%)* p-value
Allocation (Public houses) b −10.4 5.1 0.04 −20.5 −0.3 2.2 0.07
Presence of infant −9.5 4.6 0.04 −18.7 −0.3 2.6 0.05
Number of cigarettes
 1-3 c 4.1 7.9 0.61 −11.6 19.7 0.3 0.56
 >3 c 29.0 11.0 0.01 7.3 50.6 4.8* 0.01
Bathing water heating fuel
Gas d 8.5 4.8 0.08 −1.0 18.0 1.4 0.15
Coal/wood/waste d 25.6 10.0 0.01 5.8 45.3 5.3** 0.00
PM2.5Outdoor 0.5 0.1 0.00 0.3 0.7 26.0** 0.00
Intercept 36.5 8.0 0.00 20.7 52.3

Abbreviations: SE, Standard error; CI, Confidence intervals; R2, Regression coefficient

a

RL Variance robust; R2: 41 %

b

Control group: Slum houses

c

Not smoke indoor

d

Nothing or electricity

*

Significant partial correlation (p<0.05) between PM2.5 indoor and each variable holding the other variables constant.

**

Significant partial correlation (p<0.001) between PM2.5 indoor and each variable holding the other variables constant.