Table 3.
Percent difference (and 95% confidence intervals) in air pollutants associated with specific daily activities.
| Activities (Yes vs. No) | PM2.5 (μg/m3) | NO2 (ppb) | Ozone (ppb) | |||
|---|---|---|---|---|---|---|
| Personal | Indoors | Personal | Indoors | Personal | Indoors | |
| Near heater | −43.0 (−88.7, 187.6) | - | 170.9 (−91.0, 8040.1) | - | 20.7 (−33.6, 119.2) | - |
| Near burning trash | 28.8 (−69.0, 435.1) | 68.3 (−54.7, 524.8) | 28.8 (−91.4, 1831.2) | 276.6 (−91.2, 16,070.4) | −8.2 (−45.7, 55.1) | 11.7 (−40.5, 109.8) |
| Used gas appliance | 46.4 (−21.3, 172.5) | 194.6 (55.0, 459.6) * | 33.2 (−53.5, 281.4) | 92.4 (−72.9, 1268.3) | −17.1 (−34, 4.0) | −3.1 (−35.5, 45.7) |
| Used clothes dryer | 11.6 (−48.1, 140.0) | 126.1 (−20.3, 541.4) | 58.2 (−70.6, 752.3) | 31.6 (−92.3, 2133.9) | 0.7 (−24.5, 34.3) | 10.9 (−34.8, 88.5) |
| Near water heater | −11.3 (−99.4, 12,893.3) | 68.4 (−61.5, 636.1) | 52.1 (−99.9, 209,422.1) | 549.8 (−60.6, 10,626.8) | 51.4 (−50.3, 361.0) | 40.8 (−25.5, 166.2) |
| Used printer | 4.0 (−46.3, 101.5) | - | −26.9 (−77.1, 133.7) | - | −19.4 (−36.5, 2.3) | - |
| Smoking | 88.2 (−83.5, 2048) | 398.7 (78.5, 1293.8) * | 66.9 (−95.8, 6499.9) | 1008.9 (−67.5, 37,779.1) | 47.4 (−5.5, 130.0) | 12.3 (−40.2, 110.8) |
| Near smoker | 29.9 (−87.8, 1283.9) | 3.1 (−67.7, 229.1) | −78.0 (−99.5, 844.9) | 18.5 (−99.3, 20,321.0) | 54.1 (−15.4, 180.7) | −0.2 (−33.7, 50.1) |
| Exercise | −1.6 (−47.1, 83.2) | 36.3 (−25.8, 150.3) | −0.6 (−56.2, 125.5) | −19.2 (−78.5, 203.1) | 1.8 (−13.8, 20.1) | 8.7 (−12.2, 34.6) |
PM2.5, particulate matter <2.5 microns; NO2, nitrogen dioxide; Blank cell indicates that the model did not converge due to small numbers; Linear mixed models adjusted for within-person variation; air pollutants were log transformed; * Indicates statistical significance at alpha < 0.05.