Table 1.
Comparison the Baseline Characteristics of Patients in the MBC-Specific Death Group, Other Cause-Specific Death Group, and Alive Group.
| Characteristics | Group | Statistics | p | ||
|---|---|---|---|---|---|
| MBC-specific death (n = 109) |
Other cause-specific death (n = 206) |
Survival (n = 1,784) |
|||
| Age (years), n (%) | χ2 = 83.387 | <.001 | |||
| ≤50 | 12 (11.01) | 2 (0.97) | 185 (10.37) | ||
| 50–59 | 17 (15.06) | 20 (9.71) | 388 (21.75) | ||
| 60–69 | 42 (38.53) | 51 (24.76) | 601 (33.69) | ||
| ≥70 | 38 (34.86) | 133 (64.56) | 610 (34.19) | ||
| Marital status, n (%) | χ2 = 32.607 | <.001 | |||
| Married | 47 (43.12) | 131 (63.59) | 1,193 (66.87) | ||
| Unmarried | 34 (31.19) | 28 (13.59) | 253 (14.18) | ||
| Others | 28 (25.69) | 47 (22.82) | 338 (18.95) | ||
| Ethnicity, n (%) | χ2 = 24.645 | <.001 | |||
| White | 77 (70.64) | 176 (85.44) | 1,413 (79.20) | ||
| Black | 30 (27.52) | 24 (11.65) | 250 (14.01) | ||
| Others | 2 (1.83) | 6 (2.91) | 108 (6.05) | ||
| Unknown | 0 (0.00) | 0 (0.00) | 13 (0.73) | ||
| Region, n (%) | χ2 = 4.885 | .299 | |||
| Metropolis | 67 (61.47) | 126 (61.17) | 1,166 (65.36) | ||
| City | 30 (27.52) | 66 (32.04) | 462 (25.90) | ||
| Country | 12 (11.01) | 14 (6.80) | 156 (8.74) | ||
| Average annual household income ($), M (Q1, Q3) | 6,827 (5,612, 7,795) | 7,170 (6,169, 8,657) | 7,443 (6,317, 9,136) | H = 17.573 | <.001 |
| Laterality, n (%) | χ2 = 2.145 | .342 | |||
| Left | 66 (60.55) | 110 (53.40) | 952 (53.36) | ||
| Right | 43 (39.45) | 96 (46.60) | 832 (46.64) | ||
| Grade, n (%) | χ2 = 19.886 | <.001 | |||
| 1 | 6 (5.50) | 25 (12.14) | 224 (12.56) | ||
| 2 | 45 (41.28) | 102 (49.51) | 962 (53.92) | ||
| 3 | 58 (53.21) | 79 (38.35) | 598 (33.52) | ||
| T stage, n (%) | χ2 = 33.261 | <.001 | |||
| 0 | 0 (0.00) | 0 (0.00) | 1 (0.06) | ||
| 1 | 30 (27.52) | 80 (38.83) | 837 (46.92) | ||
| 2 | 60 (55.05) | 92 (44.66) | 785 (44.00) | ||
| 3 | 4 (3.67) | 8 (3.88) | 55 (3.08) | ||
| 4 | 15 (13.76) | 26 (12.62) | 106 (5.94) | ||
| N stage, n (%) | χ2 = 26.205 | <.001 | |||
| 0 | 42 (38.53) | 117 (56.80) | 1,015 (56.89) | ||
| 1 | 40 (36.70) | 59 (28.64) | 540 (30.27) | ||
| 2 | 14 (12.84) | 24 (11.65) | 153 (8.58) | ||
| 3 | 13 (11.93) | 6 (2.91) | 76 (4.62) | ||
| M stage, n (%) | χ2 = 2.941 | .230 | |||
| 0 | 107 (98.17) | 206 (100.00) | 1,763 (98.82) | ||
| 1 | 2 (1.83) | 0 (0.00) | 21 (1.18) | ||
| AJCC stage, n (%) | χ2 = 53.505 | <.001 | |||
| 0 | 0 (0.00) | 0 (0.00) | 1 (0.06) | ||
| I | 21 (19.27) | 62 (30.10) | 618 (34.64) | ||
| II | 47 (43.12) | 98 (47.57) | 888 (49.78) | ||
| III | 39 (35.78) | 46 (22.33) | 240 (13.45) | ||
| IV | 2 (1.83) | 0 (0.00) | 37 (2.07) | ||
| Tumor size (mm), M (Q1, Q3) | 25.00 (20.00, 35.00) | 24.50 (18.00, 34.00) | 21.00 (15.00, 29.00) | H = 32.941 | <.001 |
| Pathological type, n (%) | χ2 = 6.522 | .367 | |||
| Invasive ductal carcinoma | 1 (0.49) | 1 (0.92) | 26 (1.46) | ||
| Intraductal papilloma | 185 (89.81) | 102 (93.58) | 1,610 (90.25) | ||
| Adenoma | 2 (0.97) | 0 (0.00) | 4 (0.22) | ||
| Others | 18 (8.74) | 6 (5.50) | 144 (8.07) | ||
| Primary site, n (%) | χ2 = 20.781 | .187 | |||
| Nipple | 4 (3.67) | 14 (6.80) | 90 (5.04) | ||
| Central portion | 52 (47.71) | 89 (43.20) | 764 (42.83) | ||
| Upper-inner quadrant | 5 (4.59) | 5 (2.43) | 79 (4.43) | ||
| Lower-inner quadrant | 1 (0.92) | 4 (1.94) | 28 (1.57) | ||
| Upper-outer quadrant | 8 (7.34) | 26 (12.62) | 222 (12.44) | ||
| Lower-outer quadrant | 4 (3.67) | 7 (3.40) | 74 (4.15) | ||
| Axillary tail | 0 (0.00) | 1 (0.49) | 2 (0.11) | ||
| Overlapping lesion, n (%) | 15 (16.59) | 21 (10.19) | 296 (16.59) | ||
| Breast, NOS | 20 (12.84) | 39 (18.93) | 229 (12.84) | ||
| Surgery, n (%) | χ2 = 28.712 | <.001 | |||
| Yes | 97 (88.99) | 188 (91.26) | 1,728 (96.86) | ||
| No | 12 (11.01) | 18 (8.74) | 56 (3.14) | ||
| Surgery recommendations, n (%) | χ2 = 28.951 | <.001 | |||
| Surgery recommended and done | 97 (88.99) | 188 (91.26) | 1,728 (96.86) | ||
| Surgery not recommended | 8 (7.34) | 11 (5.24) | 36 (2.02) | ||
| Surgery recommended not done | 4 (3.67) | 7 (3.40) | 20 (1.12) | ||
| Radiation, n (%) | χ2 = 4.507 | .105 | |||
| Yes | 81 (74.31) | 159 (77.18) | 526 (29.48) | ||
| No or unknown | 28 (25.69) | 47 (22.82) | 1,258 (70.52) | ||
| Subtype, n (%) | χ2 = 18.751 | <.001 | |||
| Luminal A | 83 (85.44) | 176 (85.44) | 1,541 (86.38) | ||
| Luminal B | 20 (18.35) | 30 (14.56) | 206 (11.55) | ||
| HER2 enriched | 1 (0.92) | 0 (0.00) | 13 (0.73) | ||
| Triple negative | 5 (4.59) | 0 (0.00) | 24 (1.35) | ||
| Survival months, M (Q1, Q3) | 31.00 (17.00, 44.00) | 26.50 (12.00, 47.00) | 32.00 (13.00, 56.00) | H = 6.382 | <.041 |
Note. Metropolis, population over 1 million. MBC = male breast cancer; AJCC = American Joint Committee on Cancer; NOS = not otherwise specified.