Table A2.

Results of Patient Subgroups for the Main Analyses

Patient Subgroup	Main Analysis (13 trials)
	χ2	P
Age (< 35, 35 to 49, 50 to 64, ≥ 65 years)	0.61*	.436
Stage (Ia to IIa, 2b, III to IVa)	5.65*	.017
Histology (squamous, adenosquamous, or adenocarcinoma)	0.00	.992
Grade (well/moderately well differentiated, poorly differentiated)	0.00	.961
Pelvic node involvement (not involved, involved)	0.49	.483

NOTE. Two trials in which additional adjuvant chemotherapy was administered on the treatment arm are excluded.

^*Test for trend (other results are for test for interaction).