Lung function indices
| Parameter | Gulf War veterans | Comparison group | Adjusted difference between means* (95% CI) | ||
|---|---|---|---|---|---|
| Mean (SD) | % predicted (SD) | Mean (SD) | % predicted (SD) | ||
| *Adjusted differences between means were obtained using robust linear regression adjusting for age, height, smoking, weight, atopy, rank, service, education, and marital status. | |||||
| FEV1 (l) | 4.07 (0.64) | 98.0 (13.4) | 4.04 (0.64) | 97.8 (12.9) | 0.005 (–0.04 to 0.05) |
| FVC (l) | 5.13 (0.78) | 101.5 (12.6) | 5.15 (0.79) | 102.8 (12.7) | –0.04 (–0.09 to 0.01) |
| FEV1/FVC% | 79.6 (6.0) | – | 78.6 (5.8) | – | 0.7 (0.2 to 1.1) |
| PEFR (l/min) | 597.6 (97.8) | 105.7 (16.3) | 598.2 (93.0) | 106.5 (15.5) | 0.6 (–7.2 to 8.4) |
| FEF25–75% (l/s) | 3.94 (1.12) | 90.2 (25.4) | 3.79 (1.1) | 87.7 (24.3) | 0.06 (–0.03 to 0.16) |
| FEF75% (l/s) | 1.68 (0.61) | 78.4 (27.7) | 1.57 (0.6) | 74.0 (25.9) | 0.05 (0.01 to 0.10) |