Table 4.

Meta-analyses on adjuvant chemotherapy.

	Number of trials	Number of patients	Mortality risk	95% Confidence interval	West/East
Hermans et al. [1993]	11	2096	0.88 (OR)	0.72–1.08	Both
Earle and Maroun [1999]	13	1990	0.80 (OR)	0.66–0.97	West
Mari et al. [2000]	20	3658	0.82 (RR)	0.75–0.89	Both
Hu et al. [2002]	14	4543	0.56 (OR)	0.40–0.79	Both
Panzini et al. [2002]	18	3118	0.72 (OR)	0.62–0.84	Both
Janunger et al. [2002]	21	3962	0.84 (OR)	0.74–0.96	Both
Sun et al. [2009]	12	3809	0.78 (OR)	0.71–0.85	Both

OR: odds ratio, RR: relative risk.