Table 3.
Odds ratio (OR) and 95% confidence interval (CI) for daily headache visits for each interquartile range increase a in single-pollutant model in Taipei, Taiwan, 2006–2011.
| Temperature | Pollutant | OR (95% CI) b |
|---|---|---|
| ≥23° C (n = 1222 days) | PM10 | 1.10 (1.08–1.12) * |
| SO2 | 1.05 (1.03–1.07) * | |
| NO2 | 1.15 (1.13–1.17) * | |
| CO | 1.19 (1.17–1.21) * | |
| O3 | 1.06 (1.04–1.08) * | |
| <23° C (n = 969 days) | PM10 | 1.05 (1.04–1.07) * |
| SO2 | 0.93 (0.91–0.94) | |
| NO2 | 1.11 (1.09–1.13) * | |
| CO | 1.04 (1.02–1.06) | |
| O3 | 1.23 (1.20–1.26) * |
* p < 0.05; a Calculated for interquartile range increase of PM10 (26.81 μg/m3), SO2 (2.14 ppb), NO2 (8.49 ppb), CO (0.29 ppm), and O3 (12.5 ppb). b Adjusted for temperature and humidity.