Table 3.
Spirometry among patients with pediatric exposure to WTC disaster, compared with normative data.
| Clinical result (n = 127 unless otherwise indicated) | Result | Normative data (NHANES 2007-10) |
|---|---|---|
| FEV1, % predicted, meana (n = 123, SD) | 96.5 (12.9) | 101.8 (14.2) |
| FVC, % predicted, meana (n = 123, SD) | 99.0 (13.2) | 103.5 (13.7) |
| FEV1/FVC, meana (n = 122, SD) | 84.1 (6.4) | 86.0 (6.6) |
| MMEF, % predicted (MMEF, SD) | 94.6 (2.4) | 99.8 (29.2) |
| Values below lower limit of normal | ||
| FEV1, % | 11.3 | 7.2 |
| FVC, % | 8.1 | 7.1 |
| FEV1/FVC ratio, % | 10.5 | 12.9 |
| MMEF, % | 12.3 | 10.2 |
| Spirometry pattern | ||
| Normal spirometry, % | 82.9 | 86.0 |
| Isolated low FVC, % | 6.5 | 2.7 |
| Obstructed pattern, % | 8.9 | 11.0 |
| Obstructed pattern with low FVC, % | 1.6 | 0.4 |
a
Absence of anthropometric data and/or failure to meet rigorous validity standards for components of spirometry measurement contribute to missing data.