Table 1 Description of the under 21 year-old cohorts that initiated daily, 2001–2005 and 2006-2010
Dependent Variables | ENS06 period 2001–2005 N = 1991 | ENS11 period 2006–2010 N = 1421 | ||
|---|---|---|---|---|
Initiation as a daily smoker | Proportion (IC 95%) | Observations | Proportion (IC 95%) | Observations |
Yes | 0.25 (0.23;0.27) | 499 | 0.19 (0.17;0.21) | 268 |
No | 0.75 (0.73;0.77) | 1492 | 0.81 (0.79;0.83) | 1153 |
Pearson chi2(1) = 18.31 Pr = 0.000 | ||||
Independent variables at the time of the survey | Average proportion | Observations | Average proportion | Observations |
Average age | 20.38 | 1991 | 20.50 | 1421 |
Women | 0.52 | 1991 | 0.51 | 1421 |
Social Class: | ||||
Class I-II | 0.19 | 377 | 0.18 | 238 |
Class III | 0.23 | 449 | 0.17 | 234 |
Class IV-V | 0.43 | 844 | 0.47 | 631 |
Class VI | 0.14 | 275 | 0.18 | 238 |
Resident in the Canary Islands, Ceuta or Melilla | 0.06 | 1991 | 0.07 | 1421 |