Table 3.

Results of meta-analysis for smoking cessation based on adjusted data

Source	Sample size	Odds ratio	95% CI	Weight	Weight (%)
Sabol et al. 1999 (cancer risk)	104	3.28	1.10–9.78	3.22	1.15
Sabol et al. 1999 (personality genetics)	127	1.55	0.75–3.20	7.33	2.62
Sabol et al. 1999 (sexual behavior)	283	1.46	0.91–2.34	17.23	6.15
Jorm et al. 2000	409	1.16	0.79–1.72	25.47	9.09
Vandenbergh et al. 2002 (adjusted data)	251	0.81	0.46–1.41	12.41	4.43
Lerman et al. 2003	418	1.16	0.79–1.70	26.01	9.28
O’Gara et al. 2007	563	1.16	0.83–1.62	34.07	12.16
Swan et al. 2007	323	0.81	0.51–1.30	17.84	6.37
Ton et al. 2007	554	1.37	0.90–2.07	22.2	7.92
David et al. 2007	295	1.26	0.78–2.04	16.41	5.86
Styn et al. 2009 (adjusted data)	864	1.04	0.76–1.42	40.23	14.26
Tashkin et al. 2012	621	1.29	0.94–1.77	38.42	13.71
Gordiev et al. 2013	364	1.10	0.71–1.72	19.36	6.91
Pooled analysis	5176	1.17	1.04–1.31	280.1	100

Notes: Test for heterogeneity: X² =10.46, d.f. =12 (P = 0.58), I² = 0%. Test for overall effect under both fixed-effects and random-effects model: Z = 2.62 (P = 0.009).