Table 1. Studies Included in the Meta-analysis.

Author	Number of patients	Stage (T1-2/T3-4)	Treatment
			Surgery	Surgery followed by RT/ChRT	Primary RT/ChRT
Lin et al. 201220	25	6/19	21	0	4
Strick et al. 200424	7	0/7	0	7	0
Bhattacharyya 200318	64	n/a	n/a	n/a	n/a
da Cruz Perez et al. 200621	18	2/16	3	8	7
Douglas et al. 200022	30	n/a	0	32	0
Pitman et al. 19998	35	0/35	0	35	0
Qureshi et al. 200625	8	2/6	n/a	n/a	n/a
Resto et al. 200826	20	n/a	0	11	9
Vedrine et al. 200915	4	0/4	0	3	1
Lupinetti et al. 20076	105	26/79	11	60	34
Schramm et al. 200127	11	0/11	2	9	0
Rhee et al. 200619	35	10/25	3	24	8
Doerr et al. 200328	14	n/a	3	10	1
Pommier et al. 20067	23	n/a	0	12	11
Kim et al. 199911	22	4/18	3	10	9
Amit et al.	99	31/68	28	71	0
Total	520	81/288	74	282	84

Abbreviations: ChRT, chemoradiation therapy; n/a, not available; RT, radiotherapy.