FEV1 and FVC values adjusted for age, height, weight, current smoking status, deprivation category (Depcat), and childhood group according to quintiles of unadjusted birth weight
| Men (n = 163) | Women (n = 160) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| n | FEV1 | Difference (95% CI) | FVC | Difference (95% CI) | n | FEV1 | Difference (95% CI) | FVC | Difference (95% CI) | |
| Forced expiratory volume in 1 second (FEV1) and forced vital capacity (FVC) values are shown as mean. | ||||||||||
| Unadjusted birth weight score (quintiles) | ||||||||||
| Lowest 20% | 26 | 3.10 | 4.28 | 40 | 2.29 | 3.07 | ||||
| 21–40% | 31 | 3.31 | 0.21 (0.03 to 0.40) | 4.54 | 0.26 (0.03 to 0.49) | 35 | 2.43 | 0.14 (0.02 to 0.28) | 3.25 | 0.18 (0.05 to 0.32) |
| 41–60% | 32 | 3.27 | 0.17 (−0.01 to 0.35) | 4.58 | 0.30 (0.07 to 0.52) | 34 | 2.40 | 0.12 (−0.01 to 0.25) | 3.22 | 0.15 (0.01 to 0.29) |
| 61–80% | 47 | 3.30 | 0.20 (0.03 to 0.37) | 4.59 | 0.31 (0.10 to 0.52) | 36 | 2.40 | 0.11 (−0.01 to 0.24) | 3.23 | 0.16 (0.03 to 0.30) |
| Highest 20% | 27 | 3.37 | 0.27 (0.08 to 0.46) | 4.70 | 0.42 (0.18 to 0.65) | 15 | 2.49 | 0.18 (0.03 to 0.37) | 3.34 | 0.27 (0.09 to 0.45) |
| β coefficient | 0.18 | 0.25 | 0.17 | 0.23 | ||||||
| p for trend | 0.02 | <0.01 | 0.03 | <0.01 | ||||||
| Adjusted for maternal smoking | ||||||||||
| β coefficient | 0.18 | 0.25 | 0.26 | 0.23 | ||||||
| p for trend | 0.02 | <0.01 | <0.01 | <0.01 | ||||||