Table 3. Sensitivity analysis using the one-study remove approach.

Study omitted	Additive model		Dominant model		Recessive model
	OR	95% CI	OR	95% CI	OR	95% CI
Zhu, 2004	1.55	0.91–2.66	1.46	1.08–1.98	1.28	0.80–2.04
Sakamoto, 2006	1.55	0.90–2.66	1.44	1.05–2.00	1.29	0.81–2.05
Zhang, 2006	1.35	0.78–2.35	1.35	0.97–1.86	1.15	0.73–1.82
Wang, 2008	1.42	0.81–2.49	1.37	0.99–1.91	1.20	0.75–1.95
Ji, 2011	1.18	0.79–1.77	1.27	0.94–1.73	0.96	0.75–1.24
Tang, 2011	1.50	0.86–2.59	1.41	1.03–1.95	1.26	0.79–2.02
Jung, 2012	1.48	0.82–2.68	1.44	1.04–2.00	1.23	0.72–2.07
Yuan, 2012	1.26	0.74–2.17	1.26	0.95–1.67	1.13	0.70–1.83
Combined	1.41	0.85–2.33	1.38	1.02–1.85	1.18	0.77–1.81

OR, odds ratio; CI, confidence interval.