Table 2.

Adjusted effects of ethnicity on tumor characteristics^a

Outcome Variables	Hispanic vs Non‐Hispanic White (ref)	African Americans vs Non‐Hispanic White (ref)	Hispanic vs African Americans (ref)
	RRR (95% CI), P‐value	RRR (95% CI), P‐value	RRR (95% CI), P‐value
Cancer stage
I	0.90 (0.71, 1.14), 0.409	0.77 (0.49, 1.22), 0.267	1.14 (0.72, 1.82), 0.558
II	1.26 (0.97, 1.63), 0.082	0.89 (0.53, 1.49), 0.674	1.37 (0.82, 2.28), 0.229
III	1.86 (1.33, 2.6), 0.0003	1.66 (0.89, 3.10), 0.106	1.09 (0.59, 2.00), 0.765
IV	1.71 (1.15, 2.53), 0.007	1.15 (0.56, 2.35), 0.692	1.47 (0.72, 2.99), 0.284
0 (ref)
Cancer stage
III, IV	1.69 (1.36, 2.11), <0.0001	1.75 (1.17, 2.63), 0.006	0.97 (0.65, 1.44), 0.887
0–2 (ref)
ER+, and/or PR+, HER2/neu‐
Yes	0.76 (0.64, 0.9), 0.002	0.76 (0.55, 1.06), 0.107	1.01 (0.73, 1.39), 0.951
No (ref)
Unknown
ER+, and/or PR+, HER2/neu+
Yes	0.69 (0.55, 0.87), 0.001	1.03 (0.68, 1.56), 0.862	0.65 (0.43, 0.99), 0.047
No (ref)
Unknown
ER‐, PR‐, and HER2/neu‐
Yes	1.98 (1.55, 2.52), <0.0001	1.37 (0.87, 2.16), 0.172	1.40 (0.90‐0, 2.16), 0.131
No (ref)
Unknown
ER‐ and PR‐ and HER2/neu+
Yes	1.61 (1.12, 2.32), 0.01	1.46 (0.74, 2.88), 0.273	1.11 (0.57, 2.14), 0.744
No (ref)
Unknown

RRR, relative risk ratio; CI, confidence interval

^aAdjusted for age at diagnosis, diagnosis (infiltrating ductal carcinoma, lobular carcinoma, ductal and lobular carcinoma, or other), chemotherapy (yes, no), surgery (lumpectomy, mastectomy, none), and radiotherapy (yes, no). (ref: Unknown category in each variable included in the analysis but related coefficients are not presented.)