Demographic data and pulmonary function in infants who wheezed during the first year of life and those who did not
| Wheezers (n=30) | Non–wheezers (n=39) | p value | |
|---|---|---|---|
| *Independent t test; †Fisher exact test; ‡χ2 test. | |||
| Sex (M:F) | 15:15 | 19:20 | 0.9‡ |
| Mean (range) age at test (days) | 38.2 (28–55) | 36.7 (24–50) | 0.35* |
| Mean (range) length at test (cm) | 55.6 (52–60) | 57.7 (53.2–61) | 0.06* |
| Mean (range) weight at test (kg) | 4.6 (3.6–5.8) | 4.6 (3.1–5.7) | 0.56* |
| Maternal smokers | 6 (20%) | 2 (5.1%) | 0.07† |
| Maternal asthma | 12 (40%) | 20 (51.3%) | 0.35‡ |
| Mean (SD) V′maxFRC (ml/s) | 84.0 (45.9) | 115.2 (57.1) | 0.017 |
| Mean (SD) size adjusted V′maxFRC (ml/s/cm)* | 1.51 (0.82) | 2.03 (1.00) | 0.025* |