Adjusted and unadjusted odds ratio (OR) for the risk of asthma for each mg increase in exposure to VOCs
| OR‡ | 95% CI | OR† | 95% CI | |
|---|---|---|---|---|
| SES = socioeconomic status; VOC = volatile organic compounds. | ||||
| *p<0.05. | ||||
| †Adjusted odds ratio. | ||||
| ‡Unadjusted odds ratio. | ||||
| Age | 1.09* | 1.05 to 1.13 | 1.08* | 1.03 to 1.14 |
| Sex | 1.42 | 0.78 to 2.60 | 2.17 | 0.98 to 4.78 |
| Smoking | 1.04 | 0.42 to 2.60 | 0.86 | 0.28 to 2.62 |
| Temperature | 1.03 | 1.00 to 1.05 | 1.07* | 1.02 to 1.11 |
| Humidity | 1.02 | 1.00 to 1.04 | 1.02 | 0.99 to 1.05 |
| Air conditioning | 0.93 | 0.77 to 1.13 | 0.74* | 0.58 to 0.95 |
| Dust mite | 2.12* | 1.28 to 3.51 | 2.04* | 1.08 to 3.86 |
| Atopy | 2.88* | 1.51 to 5.47 | 4.98* | 2.10 to 11.83 |
| Family history | 2.77* | 1.53 to 5.00 | 3.23* | 1.55 to 6.75 |
| SES 2 | 1.34 | 0.41 to 4.30 | 1.48 | 0.72 to 8.26 |
| SES 3 | 1.00 | 0.40 to 2.50 | 2.33 | 0.66 to 8.19 |
| SES 4 | 0.78 | 0.33 to 1.82 | 1.80 | 0.57 to 5.67 |
| SES 5 | 0.66 | 0.22 to 1.98 | 1.38 | 0.34 to 5.63 |
| Gas | 0.86 | 0.44 to 1.70 | 0.91 | 0.39 to 2.13 |
| Total VOC (with 1 μg/m3 increase in VOC exposure) | 1.02* | 1.01 to 1.02 | 1.02* | 1.02 to 1.03 |
| Total VOC (with 10 μg/m3 increase in VOC exposure) | 1.2* | 1.13 to 1.27 | 1.27* | 1.18 to 1.37 |