TABLE 1.
GROUP CHARACTERISTICS AND LUNG FUNCTION RESULTS
| White | Black | South Asian | Other/mixed | |
|---|---|---|---|---|
| N |
359 |
340 |
226 |
163 |
| Boys, % |
47.1 |
41.2 |
48.7 |
45.4 |
| Age, yr |
8.19 (1.6) |
8.40 (1.59) |
8.13 (1.66) |
8.23 (1.62) |
| Weight z* |
0.39 (1.00) |
0.91 (0.99) |
−0.06 (1.25) |
0.36 (1.15) |
| Height z* |
0.30 (0.94) |
0.83 (0.91) |
0.12 (1.10) |
0.33 (1.01) |
| BMI z* |
0.34 (1.01) |
0.69 (1.05) |
−0.18 (1.32) |
0.26 (1.19) |
| FEV1 (z-score)† |
0.03 (0.87) |
−0.00 (0.93) |
−0.08 (0.96) |
0.19 (0.88) |
| FVC (z-score)† |
0.17 (0.85) |
0.22 (0.93) |
0.24 (0.97) |
0.42 (1.00) |
| FEV1/FVC (z-score)† |
−0.29 (0.84) |
−0.46 (0.96) |
−0.66 (0.95) |
−0.43 (0.82) |
| FEV1/FVC (z-score)‡ | −0.29 (0.84) | −0.35 (0.95) | −0.15 (0.92) | −0.23 (0.79) |
Data presented as mean (SD) unless otherwise indicated. A z-score of 0 equates to the 50th centile or 100% predicted.
*
According to CDC 2000 (14).
†
According to the Quanjer GLI-2012 ethnic specific equations (6).
‡
According to the Quanjer GLI-2012 ethnic specific equations for white children (6). Data from South Asian children were expressed according to the “South East Asian equation.”