Gender differences in the association between self-reported stress and cigarette smoking in Korean adolescents

Table 2 Demographic characteristics by categories of self-reported stress

	Total	Stress				p for trend
	Total	Low	Medium	High	Very high	p for trend
Whole sample
Number of day cigarette smoked per month, d (95 % CI)	1.40 (1.22–1.58)	0.77 (0.44–1.10)	1.19 (0.97–1.41)	1.94 (1.49–2.39)	3.68 (2.22–5.13)	<0.001
Number of cigarette smoked per day, cigs (95 % CI)	0.63 (0.52–0.75)	0.40 (0.10–0.71)	0.51 (0.38–0.64)	0.85 (0.59–1.10)	2.08 (1.07–3.10)	<0.001
Girls
Number of day cigarette smoked per month, d (95 % CI)	0.64 (0.46–0.82)	0.35 (0.01–0.70)	0.42 (0.23–0.61)	0.91 (0.48–1.34)	2.72 (1.07–4.37)	<0.001
Number of cigarette smoked per day, cigs (95 % CI)	0.27 (0.18–0.36)	0.09 (0.01–0.18)	0.15 (0.08–0.21)	0.36 (0.17–0.55)	1.69 (0.39–2.98)	<0.001
Boys
Number of day cigarette smoked per month, d (95 % CI)	2.08 (1.78–2.38)	1.07 (0.56–1.58)	1.85 (1.48–2.22)	3.08 (2.28–3.88)	4.91 (2.34–7.49)	<0.001
Number of cigarette smoked per day, cigs (95 % CI)	0.97 (0.77–1.16)	0.62 (0.11–1.14)	0.82 (0.59–1.05)	1.39 (0.90–1.88)	2.59 (0.95–4.24)	0.001

ISSN: 1617-9625