Table 3.

Results of the meta-analysis

	Number of studies	Number of patients	HR (95% CI)	Heterogeneity (I2, χ2, P)
Overall survival
All	8	1119	1.68 (1.10–2.59)a	67.0%, 21.21, 0.003
Univariate analysis	4	479	1.13 (0.85–1.51)	54.1%, 6.54, 0.088
Multivariate analysis	4	640	2.37 (1.60–3.49)	47.3%, 5.69, 0.128
Country
Asian	3	468	1.50 (0.61–3.68)a	80.4%, 10.21, 0.006
Western	5	651	1.80 (1.33–2.45)	43.2%, 7.04, 0.134
Disease-free survival
All	7	859	1.11 (1.03–1.19)	33.0%, 8.96, 0.176
Univariate analysis	4	377	0.86 (0.60–1.24)	0.0%, 2.18, 0.536
Multivariate analysis	3	482	1.12 (1.04–1.21)	59.4%, 4.92, 0.085
Country
Asian	3	554	1.42 (0.61–3.31)a	71.6%, 7.04, 0.030
Western	4	305	1.11 (1.03–1.20)	0.0%, 1.56, 0.667

^aThe result was based on the random effect model