Table 3 Associations between indoor air pollutant exposure levels and CHD
Indoor air pollutant exposure levels | Controls N (%) | Cases N (%) | COR | AORa |
|---|---|---|---|---|
TVOCb | ||||
Low (≤ 0.005 mg/m3) | 38 (50.7) | 9 (20.5) | Reference | Reference |
Middle (0.006–0.300 mg/m3) | 19 (25.3) | 6 (15.9) | 1.56 (0.50–4.82) | 1.62 (0.40–6.56) |
High (> 0.301 mg/m3) | 18 (24.0) | 19 (63.6) | 6.57** (2.57–16.77) | 7.09* (2.10–23.88) |
Formaldehyde | ||||
Low (≤ 0.01 mg/m3) | 26 (34.7) | 23 (52.3) | Reference | Reference |
Middle (0.011–0.030 mg/m3) | 25 (33.3) | 9 (20.5) | 0.41 (0.16–1.05) | 0.73 (0.22–2.43) |
High (> 0.031 mg/m3) | 24 (32.0) | 12 (27.3) | 0.56 (0.23–1.38) | 0.82 (0.25–2.68) |
PM2.5 | ||||
Low (≤ 4 µg/m3) | 27 (36.0) | 6 (13.6) | Reference | Reference |
Middle (5–13 µg/m3) | 25 (33.3) | 21 (47.7) | 3.78* (1.31–10.89) | 2.89 (0.77–10.88) |
High (> 13 µg/m3) | 23 (30.7) | 17 (38.6) | 3.32* (1.13–9.84) | 3.26 (0.84–12.71) |
PM10 | ||||
Low (≤ 5 µg/m3) | 24 (32.0) | 4 (9.1) | Reference | Reference |
Middle (6–14 µg/m3) | 28 (37.3) | 22 (50.0) | 4.71* (1.43–15.60) | 5.00 (1.12–22.31) |
High (> 14 µg/m3) | 23 (30.7) | 18 (40.9) | 4.70* (1.38–15.99) | 5.36 (1.13–25.44) |