Table 2

AR exon 1 CAG_n allele categories and breast cancer risk among 299 cases and 229 controls

CAG repeat cut-off	No. of cases	No. of controls	ORs	95% CI	P
AR long allele
≤21	16	6	2.1	0.81–5.45	0.13
≤22	49	35	1.09	0.68–1.74	0.81
≤23	94	94	0.66	0.46–0.94	0.028
≤24	139	131	0.65	0.46–0.92	0.018
≤25	183	169	0.56	0.38–0.82	0.003
≤26	218	181	0.71	0.48–1.07	0.12
≤27	254	206	0.63	0.37–1.08	0.12
AR short allele
≤19	46	40	0.86	0.54–1.37	0.55
≤20	69	54	0.90	0.65–1.46	0.92
≤21	110	81	1.06	0.74–1.52	0.78
≤22	178	152	0.74	0.52–1.07	0.12
≤23	239	194	0.72	0.46–1.14	0.17
≤24	267	215	0.60	0.28–1.04	0.09
≤25	284	223	0.51	0.19–1.33	0.18
AR mean of alleles
≤20	28	22	0.97	0.54–1.75	1
≤21	54	40	1.0	0.66–1.64	0.91
≤22	91	75	0.90	0.62–1.30	0.57
≤23	139	129	0.67	0.48–0.95	0.028
≤24	200	176	0.61	0.41–0.90	0.015
≤25	242	206	0.47	0.28–0.80	0.005
≤26	275	220	0.47	0.21–1.03	0.07
≤27	288	225	0.46	0.15–1.48	0.7

The odds ratios presented are those for breast cancer risk for women falling in the category below the cutoff value, compared to women above the cutoff point.