Table 4.

Characteristics of first tobacco use by male and female current smokers.

Characteristics	Male % [95% confidence interval (CI)]	Female % (95% CI)
Age began regular smoking (years)	N = 8,851	N = 106
≤17	13.2 (12.4, 13.9)	3.77 (0.15, 7.40)
18–25	70.5 (69.6, 71.5)	29.3 (20.6, 37.9)
≥26	16.3 (15.6, 17.1)	67.0 (58.0, 75.9)
Location of initial smoking	N = 7,355	N = 80
School/workplace	58.0 (56.9, 59.1)	25.0 (15.5, 34.5)
Home	28.2 (27.1, 29.2)	65.0 (54.6, 75.5)
Others	13.8 (13.0, 14.6)	10.0 (3.43, 16.6)
Others present at initial smoking	N = 7,983	N = 100
Peers	81.9 (81.1, 82.8)	64.0 (54.6, 73.4)
Alone	13.7 (12.9, 14.5)	22.0 (13.9, 30.1)
Family members	4.4 (03.9, 04.8)	14.0 (7.20, 20.8)