Table 3.
Asthma symptoms, distance from refinery (km) and meteorologically estimated exposure (MEE) (hr/km2)* (N = 2,361)
| Outcome variable | Exposure variable | Odds ratio | 95% CI | IQR standardised odds ratio | IQR standardised 95% CI |
|---|---|---|---|---|---|
| Need to bring inhaler to school | MEE | 2.26 | 1.27 - 4.04 | 1.22 | 1.06 - 1.40 |
| Distance | 0.93 | 0.81 - 1.07 | 0.89 | 0.72 - 1.11 | |
| Ever wheeze at rest (1a)** | MEE | 1.81 | 1.18 - 2.79 | 1.15 | 1.04 - 1.28 |
| Distance | 1.06 | 0.97 - 1.16 | 1.10 | 0.95 - 1.27 | |
| Recent wheezing at rest (1b) | MEE | 1.62 | 0.78 - 3.36 | 1.12 | 0.94 - 1.34 |
| Distance | 0.93 | 0.79 - 1.09 | 0.89 | 0.70 - 1.14 | |
| Frequent wheezing at rest (1c) | MEE | 2.74 | 1.24 - 6.04 | 1.27 | 1.05 - 1.54 |
| Distance | 0.95 | 0.80 - 1.13 | 0.93 | 0.71 - 1.21 | |
| Ever wake with wheezing at night (2a) | MEE | 1.13 | 0.74 - 1.73 | 1.03 | 0.93 - 1.14 |
| Distance | 1.07 | 0.98 - 1.17 | 1.11 | 0.97 - 1.28 | |
| Recent waking with wheezing at night (2b) | MEE | 3.29 | 1.29 - 8.37 | 1.33 | 1.06 - 1.66 |
| Distance | 0.97 | 0.82 - 1.15 | 0.95 | 0.74 - 1.24 | |
| Frequent waking with wheezing at night (2c) | MEE | 1.49 | 0.77 - 2.89 | 1.10 | 0.94 - 1.29 |
| Distance | 1.05 | 0.90 - 1.23 | 1.08 | 0.86 - 1.37 | |
| Ever wheeze after exercise (3a) | MEE | 1.40 | 0.89 - 2.21 | 1.08 | 0.97 - 1.21 |
| Distance | 0.98 | 0.89 - 1.09 | 0.98 | 0.84 - 1.14 | |
| Recent wheezing after exercise (3b) | MEE | 1.91 | 0.85 - 4.31 | 1.17 | 0.96 - 1.42 |
| Distance | 0.89 | 0.75 - 1.05 | 0.83 | 0.64 - 1.08 | |
| Frequent wheezing after exercise (3c) | MEE | 1.75 | 0.73 - 4.20 | 1.14 | 0.93 - 1.41 |
| Distance | 0.90 | 0.74 - 1.10 | 0.86 | 0.63 - 1.16 | |
| Ever wake with night cough (4a) | MEE | 1.20 | 0.78 - 1.85 | 1.04 | 0.94 - 1.16 |
| Distance | 0.96 | 0.88 - 1.06 | 0.95 | 0.82 - 1.09 | |
| Recent waking with coughing at night (4b) | MEE | 1.74 | 0.83 - 3.66 | 1.14 | 0.96 - 1.36 |
| Distance | 1.00 | 0.86 - 1.16 | 1.00 | 0.79 - 1.26 | |
| Frequent waking with coughing at night (4c) | MEE | 1.99 | 0.87 - 4.54 | 1.18 | 0.97 - 1.44 |
| Distance | 0.98 | 0.82 - 1.17 | 0.97 | 0.73 - 1.28 | |
| Ever distressing wheeze at rest (5a) | MEE | 1.36 | 0.83 - 2.23 | 1.08 | 0.96 - 1.21 |
| Distance | 1.01 | 0.91 - 1.13 | 1.02 | 0.86 - 1.20 | |
| Recent distressing wheeze at rest (5b) | MEE | 1.83 | 0.75 - 4.49 | 1.16 | 0.93 - 1.43 |
| Distance | 0.98 | 0.81 - 1.18 | 0.97 | 0.72 - 1.30 | |
| Frequent distressing wheeze at rest (5c) | MEE | 2.66 | 0.94 - 7.55 | 1.26 | 0.98 - 1.62 |
| Distance | 0.97 | 0.77 - 1.21 | 0.95 | 0.67 - 1.35 | |
CI: confidence interval. IQR: interquartile range. Recent: in the last 12 months. Frequent: at least monthly in the last 12 months. Associations with confidence intervals which exclude the null in bold.
*Adjusted for passive smoking, family atopy and GIS distance to nearest major road.
** Video sequence number in parentheses.