Table 2

Percentage of participants who attained each milestone, and the mean age of attaining each milestone among a cohort of adolescent current smokers in Lebanon

Milestone (age in years)Waterpipe smokersCigarette smokers
N (%)Mean*(SD)N (%)Mean (SD)
Age of first smoking160 (100)12.9 (1.9)24 (100)11.3 (4.9)
Age of first inhaling tobacco smoke into lungs†160 (100)12.9 (1.9)16 (66.6)13.3 (1.4)
Age first HONC item was experienced114 (71.2)14.1 (1.4)18 (75.0)13.9 (1.1)
Age first experienced Wanting (PD stage 2)92 (57.5)13.9 (1.3)13 (54.2)13.8 (1.4)
Age of attaining ICD-10 ND61 (38.1)14.6 (1.3)6 (25.0)14.7 (1.1)
Age first experienced Craving (PD stage 3)42 (26.2)14.3 (1.2)7 (29.2)14.2 (1.2)
Age first experienced Needing (PD stage 4)14 (8.8)15.0 (1.7)7 (29.2)14.7 (1.3)
  • *None of the differences are statistically significant.

  • †As inhalation is required for waterpipe smoking, the age of inhaling was assumed to be the same as the age of first smoking a waterpipe.

  • HONC, Hooked on Nicotine Checklist; ICD-10 ND, International Classification of Diseases, Nicotine Dependence (≥3 criteria); PD, Stages of Physical Dependence.