Table 1.
Baseline characteristics of sample of waterpipe smokers and nonsmokers (n = 300).
| Characteristics | Total | WP smoker (n = 150) | Nonsmoker (n = 150) | P value∗ |
|---|---|---|---|---|
| Age in years (mean ± SD) | 20.6 ± 1.7 | 20.7 ± 1.7 | 20.5 ± 1.8 | 0.325 |
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| Weight in kg (mean ± SD) | 72.4 (±14.6) | 71.8 ± 14.4 | 73.0 ± 14.8 | 0.925 |
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| Height in cm (mean ± SD) | 171.9 (±8.7 | 171.4 ± 8.7 | 172.5 ± 8.7 | 0.992 |
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| BMI | 24.37 ± 3.9 | 24.35 ± 4.07 | 24.38 ± 3.73 | 0.963 |
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| Sex | ||||
| Male | 200 (66.7%) | 200 (66.7%) | 100 (66.7%) | 1.0 |
| Female | 100 (33.4%) | 100 (33.4%) | 50 (33.4%) | |
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| Physical activity | ||||
| None | 107 (35.7%) | 70 (46.7%) | 37 (24.7%) | |
| Sometimes | 147 (49.0%) | 66 (44.0%0 | 81 (54.0%) | <0.001 |
| Regular | 46 (15.3%) | 14 (9.3%) | 32 (21.3%) | |
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| WPS heads per week (mean ± SD (range)) | — | 9.6 ± 6.6 (1–35) | — | — |
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| Duration WPS in years (mean ± SD (range)) | — | 3.8 ± 1.6 (1-8) | — | — |
∗Independent t-test and chi-squared test.