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Table 1 Prevalence of having tried and being a regular waterpipe user by demographic characteristics and cigarette use
| Ever use (n = 937 all students) | Regular use (n = 355 all who tried waterpipes) | ||||||
|---|---|---|---|---|---|---|---|
| Totals | n (%) | Unadjusted OR (95%CI) | Adjusted OR (95%CI)2 | n (%) | Unadjusted OR (95%CI) | Adjusted OR (95%CI)2 | |
| Age | N/A | 1.02 (0.97–1.07)1 | 1.00 (0.94–1.06) | N/A | 0.91 (0.77–1.07) | 0.90 (0.74–1.10) | |
| Gender | |||||||
| Female | 544 (58.1) | 193 (35.5%) | 1.00 | 1.00 | 32 (16.6%) | 1.00 | 1.00 |
| Male | 393 (41.9) | 162 (41.2%) | 1.28 (0.98–1.67) | 1.49 (1.10–2.01) | 43 (26.5%) | 1.82 (1.09–3.04) | 1.86 (1.07–3.23) |
| Ethnic group | |||||||
| White | 675 (72.0) | 257 (38.1%) | 1.00 | 1.00 | 48 (18.7%) | 1.00 | 1.00 |
| Asian | 159 (17.0) | 65 (40.9%) | 1.13 (0.79–1.60) | 1.21 (0.83–1.75) | 16 (24.6%) | 1.42 (0.75–2.71) | 1.65 (0.85–3.23) |
| Chinese | 36 (3.8) | 5 (13.9%) | 0.26 (0.10–0.68) | 0.21 (0.08–0.56) | 2 (40.0%) | 2.90 (0.47–17.85) | 2.51 (0.38–16.82) |
| Black | 46 (4.9) | 12 (26.1%) | 0.57 (0.29–1.13) | 0.61 (0.30–1.24) | 3 (25.0%) | 1.45 (0.38–5.56) | 1.32 (0.33–5.36) |
| Arab | 16 (1.7) | 13 (81.3%) | 7.05 (1.99–24.97) | 6.44 (1.73–23.94) | 5 (38.5%) | 2.72 (0.85–8.69) | 2.51 (0.74–8.51) |
| Other | 5 (0.5) | 3 (60.0%) | 2.44 (0.41–14.70) | 2.38 (0.33–17.02) | 1 (33.3%) | 2.18 (0.19–24.50) | 1.80 (0.12–26.90) |
| Year of course | |||||||
| 1 | 350 (37.4) | 101 (28.9%) | 1.00 | 1.00 | 23 (22.8%) | 1.00 | 1.00 |
| 2 | 372 (39.7) | 158 (42.5%) | 1.82 (1.34–2.48) | 2.26 (1.61–3.18) | 31 (19.6%) | 0.83 (0.45–1.52) | 1.25 (0.63–2.47) |
| 3 | 215 (22.9) | 96 (44.7%) | 1.99 (1.40–2.84) | 2.63 (1.74–3.96) | 21 (21.9%) | 0.95 (0.49–1.86) | 1.79 (0.78–4.09) |
| Cig smoking | |||||||
| No | 849 (90.6) | 286 (33.7%) | 1.00 | 1.00 | 49 (17.1%) | 1.00 | 1.00 |
| Yes | 88 (9.4) | 69 (78.4%) | 7.15 (4.22–12.11) | 8.06 (4.63–14.01) | 26 (37.7%) | 2.93 (1.64–5.20) | 2.77 (1.52–5.06) |
