Table 2.

Relative risk (RR) on death for related variables (all subjects)

Variables	N	N deaths percent read by row	Univariate RR (95% CI), P	Multivariate RR (95% CI)P
Age at diagnosis (years)	390	89 (22.8%)	1.02 (0.99–1.04), 0.15	1.02 (0.99–1.04), 0.23
ER status
Negative	58 (14.9%)	9 (15.5%)	1	1
Positive	233 (59.7%)	51 (21.9%)	1.94 (0.95–3.95), 0.07	2.08 (0.99–4.36), 0.05
Borderline	9 (2.3%)	0
Missing	90 (23.1%)	29 (32.6%)
Mastectomy
No	169 (43.3%)	33 (19.5%)	1	1
Yes	221 (56.7%)	56 (25.3%)	1.13 (0.73–1.74), 0.59	1.38 (0.68–2.79), 0.37
Grade
I	23 (5.9%)	3 (13.0%)	1	1
II	96 (24.6%)	20 (20.8%)	1.12 (0.33–3.77), 0.86	1.12 (0.32–3.97), 0.86
III	106 (27.2%)	18 (17.0%)	0.87 (0.26–2.96), 0.82	0.77 (0.21–2.80), 0.69
Missing	165 (42.2%)	48 (29.1%)
Nodal Status
Negative	203 (52.1%)	40 (19.7%)	1	1
Positive	145 (37.2%)	39 (26.9%)	1.36 (0.87–2.11), 0.18	0.98 (0.55–1.77), 0.95
Missing	42 (10.8%)	10 (23.8%)
Size (mm)
0–10	87 (22.3%)	13 (14.9%)	1	1
11–20	143 (36.7%)	36 (25.2%)	1.37 (0.73–2.59), 0.33	1.65 (0.84–3.23), 0.15
21–30	76 (19.5%)	22 (29.0%)	1.67 (0.84–3.31), 0.14	1.84 (0.85–3.95), 0.12
31+	61 (15.6%)	15 (24.6%)	1.94 (0.92–4.08), 0.08	2.21 (0.95–5.17), 0.07
Missing	23 (5.9%)	3 (13.0%)
Oophorectomya
No	123 (31.5%)	46 (37.4%)	1	1
Yes	262 (67.2%)	38 (14.5%)	0.97 (0.78–1.21), 0.80	0.92 (0.72–1.16), 0.45
Missing	5 (1.3%)	5 (100%)
Tamoxifen
No	180 (46.2%)	47 (26.1%)	1	1
Yes	148 (38.0%)	32 (21.6%)	0.95 (0.60–1.49), 0.82	0.87 (0.52–1.46), 0.60
Missing	62 (15.9%)	10 (16.1%)
Radiation therapy
No	195 (50%)	47 (24.1%)	1	1
Yes	167 (42.8%)	36 (21.6%)	0.94 (0.61–1.45), 0.76	1.38 (0.69–2.73), 0.36
Missing	28 (7.2%)	6 (21.4%)
Chemotherapy
No	141 (36.2%)	37 (26.2%)	1	1
Yes	221 (56.7%)	46 (20.8%)	1.05 (0.68–1.63), 0.83	1.00 (0.57–1.74), 1.00
Missing	28 (7.2%)	6 (21.4%)

^aTime dependent