Table 4.
Unadjusted values of respiratory efforts (FVC, FEV1, FEV05) and the quartiles of birthweight
| FVC | n | mean | SD | P-level |
|---|---|---|---|---|
| Birthweight (quartiles) | ||||
| ≤ 3165 g | 43 | 1070.6 | 202.4 | |
| 3166 – 3425 g | 44 | 1098.0 | 170.4 | z for trend = 3.44 P = 0.0003 |
| 3426 – 3720 g | 44 | 1110.6 | 192.0 | |
| ≥ 3720 g | 45 | 1218.5 | 196.0 | |
| Total | 176 | 1124.8 | 194.1 | |
| FEV1 | ||||
| Birthweight (quartiles) | ||||
| ≤ 3165 g | 43 | 1025.4 | 189.8 | |
| 3166 – 3425 g | 44 | 1040.9 | 179.3 | z for trend = 3.15 P = 0.0005 |
| 3426 – 3720 g | 44 | 1054.5 | 176.8 | |
| ≥ 3720 g | 45 | 1156.9 | 175.9 | |
| Total | 176 | 1070.9 | 183.8 | |
| FEV05 | ||||
| Birthweight (quartiles) | ||||
| ≤ 3165 g | 43 | 861.0 | 158.1 | |
| 3166 – 3425 g | 44 | 858.7 | 179.2 | z for trend = 3.35 P = 0.001 |
| 3426 – 3720 g | 44 | 836.8 | 168.0 | |
| ≥ 3720 g | 45 | 816.8 | 157.0 | |
| Total | 176 | 843.1 | 168.1 | |