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Table 1 Demographic and clinical characteristics

From: Characterization and prognosis of estrogen receptor-positive/progesterone receptor-negative male breast cancer: a population-based study

Characteristics PR-positive PR-negative P value
N % N %
Age at diagnosis      0.008
 ≤ 40 62 2.7 18 5.1  
 41–55 501 21.6 89 25.1  
 56–70 901 38.8 145 40.8  
 71–85 722 31.1 89 25.1  
 > 85 136 5.9 14 3.9  
Race      < 0.001
 White 1901 81.9 273 76.9  
 Black 266 11.5 70 19.7  
 Other 144 6.2 11 3.1  
 Unknown 11 0.5 1 0.3  
Laterality      0.910
 Right 1211 52.2 184 51.8  
 Left 1111 47.8 171 48.2  
Marital status      0.331
 Married 1562 67.3 235 66.2  
 Not married 662 28.5 110 31.0  
 Unknown 98 4.2 10 2.8  
Grade      < 0.001
 I 264 11.4 36 10.1  
 II 1137 49.0 135 38.0  
 III/IV 744 32.0 159 44.8  
 Unknown 177 7.6 25 7.0  
Tumor size      0.010
 T1 1110 47.8 146 41.1  
 T2 906 39.0 149 42.0  
 T3 96 4.1 21 5.9  
 T4 145 6.2 34 9.6  
 TX 65 2.8 5 1.4  
Nodal status      0.034
 N0 1175 50.6 153 43.1  
 N1 678 29.2 114 32.1  
 N2 219 9.4 44 12.4  
 N3 152 6.5 32 9.0  
 NX 98 4.2 12 3.4  
Metastasis      < 0.001
 M0 2172 93.5 311 87.6  
 M1 150 6.5 44 12.4  
Stage      < 0.001
 I 701 30.2 85 23.9  
 II 968 41.7 137 38.6  
 III 425 18.3 84 23.7  
 IV 150 6.5 44 12.4  
 Unknown 78 3.4 5 1.4  
Surgery      0.623
 Done 2217 95.5 335 94.4  
 Not 98 4.2 19 5.4  
 Unknown 7 0.3 1 0.3  
Radiation      0.089
 Done 613 26.4 109 30.7  
 Not 1709 73.6 246 69.3  
Chemotherapy      < 0.001
 Yes 848 36.5 181 51.0  
 No/unknown 1474 63.5 174 49.0