Table 2.
Bivariate Analysis of Predictors and Modifiers of Indoor PM2.5 Concentrations
| Activity (reported versus not reported during the monitoring period) | PM2.5 (μg/m3) | PM10 (μg/m3) | |||||
|---|---|---|---|---|---|---|---|
| % Reporting activity | Coefficient | 95% Confidence Interval | P-value | Coefficient | 95% Confidence Interval | P-value | |
| Smoking | 56 | 26.0 | 18.3, 33.8 | <0.01 | 28.4 | 18.0, 38.7 | <0.01 |
| Sweeping | 85 | 13.0 | 2.9, 23.0 | 0.01 | 16.4 | 3.6, 29.2 | 0.01 |
| Stove use | 92 | 5.8 | -9.6, 21.1 | 0.46 | 6.6 | -13.1, 26.3 | 0.51 |
| Burned food | 6 | 4.2 | -13.7, 22.2 | 0.65 | 3.7 | -20.6, 28.0 | 0.77 |
| Oven | 49 | 3.0 | -5.3, 11.3 | 0.48 | 5.9 | -4.9, 16.7 | 0.28 |
| Candles/incense | 33 | 0.7 | -8.2, 9.5 | 0.89 | -0.03 | -11.5, 11.4 | 0.99 |
| Open Windows | 85 | -2.0 | -14.2, 10.2 | 0.75 | 9.9 | -5.7, 25.5 | 0.22 |
| Vacuuming | 37 | -1.7 | -10.3, 6.9 | 0.70 | -4.3 | -15.4, 6.9 | 0.46 |
| Air conditioning | 30 | -1.9 | -15.7, 11.8 | 0.69 | -6.3 | -18.1, 5.6 | 0.30 |
| Space heater | 7 | -3.2 | -19.7, 13.3 | 0.70 | 1.9 | -18.7, 22.4 | 0.86 |
| Air purifier | 1 | -20.5 | -88.1, 47.1 | 0.55 | -5.4 | -56.8, 46.0 | 0.84 |