Relationship between mean forced expiratory volume in 1 second (FEV1) of 1127 Gulf War veterans and SMOIL and dust storm exposure and completion of deployment before the air war
| Mean | SD | Adjusted difference between means† | 95% CI | |
|---|---|---|---|---|
| *Dose response is the expected change in FEV1 per category increase in SMOIL exposure. | ||||
| †Differences between means adjusted for age, height, weight, atopic status, smoking, service type, rank, education, and marital status. | ||||
| SMOIL | ||||
| None | 4.09 | 0.64 | 0.0 | – |
| Any | 4.05 | 0.64 | –0.05 | –0.11 to 0.01 |
| Low | 4.06 | 0.66 | –0.05 | –0.11 to 0.02 |
| High | 4.04 | 0.60 | –0.03 | –0.15 to 0.08 |
| Dose response* | – | – | –0.03 | –0.08 to 0.02 |
| Dust storms | ||||
| No | 4.08 | 0.60 | 0.0 | – |
| Yes | 4.06 | 0.65 | –0.03 | –0.09 to 0.03 |
| Deployment completed before air war | ||||
| Yes | 4.08 | 0.67 | 0.0 | – |
| No | 4.07 | 0.63 | –0.06 | –0.13 to 0.01 |