Table 2.
Spirometry results comparing waterpipe smokers and nonsmokers
| Parameters¥ | WP smoker (n = 150) | Nonsmokers (n = 150) | P value∗ |
|---|---|---|---|
| FEV1 | 3.96 (±0.7) | 4.19 (±0.8) | <0.001 |
| FEV1% | 95.9 (±8.5) | 100.5 (±9.3) | 0.002 |
| FVC | 4.6 (±0.9) | 4.7 (±0.9) | 0.935 |
| FVC% | 95.0 (±8.8) | 96.5 (±10.1) | 0.194 |
| PEF | 8.4 (±1.8) | 9.2 (±1.8) | 0.002 |
| PEF% | 94.4 (±11.6) | 104.4 (±12.0) | <0.001 |
| FEV1/FVC | 85.9 (±5.7) | 88.7 (±4.8) | <0.001 |
| FEV1/FVC% | 101.5 (±6.8) | 104.7 (±4.5) | 0.002 |
| FEF25–75 | 4.3 (±1.0) | 4.9 (±1.0) | <0.001 |
| FEF25–75% | 96.2 (±18.7) | 109.7 (±18.4) | <0.001 |
¥Values are presented in mean ± SD. ∗Adjusted P values were obtained using linear regression.