Table 1 Demographic and smoking-related characteristics of the samples

Males, n (% of total)

58.8%

51.6%

Mean Age ± SD, years

44.2 (12.2)

42.7 (13.7)

Percent with tertiary education

11.8%

35.5%

Cigarettes smoked per day, n (% of total)

   10-15

44.1%

45.2%

   16-20

20.6%

16.1%

   21+

35.3%

38.7%

Time (mins) between waking and 1^st cigarette, n (% of total)

   < = 5

9 (29.0)

12 (38.7)

   6-30

16 (51.6)

13 (42.0)

   > = 31

6 (19.4)

6 (19.3)

Self-perceived addiction, n (% of total)

   Very addicted

73.5

87.1