TABLE 4.
Within-season associations of temperature at home address and FEV1
| Season | Unit | Difference in FEV1 mL |
||
|---|---|---|---|---|
| 1-day average temperature | 2-day average temperature | 7-day average temperature | ||
| Winter | 5°C | −28.5 (−55.9-−1.1) | −23.5 (−53.6–6.6) | −53.5 (−86.7-−20.4) |
| Spring | 5°C | −23.7 (−44.8-−2.5) | −26.3 (49.0-−3.6) | −31.5 (−55.9-−7.2) |
| Summer | 5°C | 10.0 (−15.8–35.9) | 17.6 (−13.7–48.9) | 27.3 (−9.9–64.5) |
| Autumn | 5°C | 8.4 (−12.5–29.3) | 11.7 (−10.1–33.5) | 28.1 (4.8–51.5) |
Data are presented as mean (95% CI). Linear mixed models adjusted for participant sex, age, age2, height, weight, asthma, smoking status, pack-years, household smoking, education, census tract median household income, previous-day regional relative humidity and level of particles with a diameter of <2.5 µm, examination 8 and cohort. FEV1: forced expiratory volume in 1 s.