Table 1.
Progression of waterpipe smoking by gender and time interval among school based sample of adolescents in Irbid, Jordan, 2008-2011. (N=864)
| Boys (N=518) | ||||||
|---|---|---|---|---|---|---|
|
| ||||||
| Time interval |
Entered
(N) |
Progressed
N (%)a |
Censored
N (%)a |
Didn't
progress N (%)a |
Probability of
progression (%) |
Cumulative
probability (%) |
| Baseline-year1 | 337 | 42 (9.3) | 25 (12) | 270 (78.7) | 9.3 | 9.3 |
| year1-year2 | 355 | 56 (14.1)b | 8 (1.7) | 291 (84.2) | 14.1 | 22.1 |
| Year2-year3 | 387 | 79 (19.3) b | 23 (6.7) | 285 (74.0) | 19.3 | 37.1 |
|
| ||||||
| Girls (N = 346) | ||||||
|
| ||||||
| Baseline-year1 | 180 | 21 (11.2) | 9 (4.9) | 150 (83.9) | 11.2 | 11.2 |
| year1-year2 | 226 | 37 (17.2) b | 7 (3.2) | 182 (79.6) | 17.2 | 26.5 |
| Year2-year3 | 272 | 43 (13.8) b | 10 (4.9) | 219 (81.3) | 13.8 | 36.7 |
a
All proportions are weighted.
b
New students initiated waterpipe smoking among never smokers.