Table 1.
Summary of pre-intervention household characteristics and environmental factors (N = 2980).
Table 2.
Summary of pre-intervention HAP concentrations (N = 2980 for PM2.5; N = 2013 for CO).
Fig 1.
Comparison of PM2.5/CO concentration-time relationship before and after filtering: left, original 10-second interval data; right, aggregated 5-minute interval data with SI period indicated by color (red-SI; blue-non-SI).
Table 3.
Summary of pre-intervention household SI and non-SI HAP concentrations (N = 2980 for PM2.5; N = 2013 for CO).
Fig 2.
Tukey boxplots of diurnal variation of hourly average (a) PM2.5 concentrations; (b) CO concentrations.
Fig 3.
Tukey boxplots of monthly variation of: (a) daily average PM2.5 concentrations*; (b) daily average CO concentrations*; (c) daily average indoor relative humidity; (d) daily average temperature.
Fig 4.
Scatter plot of CO concentration and PM2.5 concentration on logarithmic scales: regression line estimated by simple linear regression and Lowess smoother on original scales.
Table 4.
Summary of pre-intervention PM2.5 concentrations stratified by household characteristics in dry season (N = 2980).
Table 5.
Summary of pre-intervention CO concentrations stratified by household characteristics in rainy season (N = 2013).
Table 6.
Relative and absolute differences in PM2.5 concentrations predicted by household characteristics and season.
Table 7.
Relative and absolute differences in CO concentrations predicted by household characteristics and season.