Table 2 Baseline characteristics of the cohort
Features | Training set(N=2404) | Test set(N=1030) | ||
|---|---|---|---|---|
0 (N=1930) | 1 (N=474) | 0 (N=827) | 1 (N=203) | |
Peritoneal cytology | ||||
 Negative | 1562 (80.9%) | 143 (30.2%) | 686 (83.0) | 60 (29.6) |
 Suspicious | 75 (3.9%) | 21 (4.4%) | 19 (2.3) | 12 (5.9) |
 Positive | 293 (15.2%) | 310 (65.4%) | 122 (14.8) | 131 (64.5) |
Year of diagnosis | ||||
 2010-2013 | 595 (30.8%) | 145 (30.6%) | 253 (30.6) | 73 (36.0) |
 2014-2017 | 642 (33.3%) | 171 (36.1%) | 289 (34.9) | 55 (27.1) |
 2018-1021 | 693 (35.9%) | 158 (33.3%) | 285 (34.5) | 75 (36.9) |
Race | ||||
 Whites | 1284 (66.5%) | 308 (65%) | 545 (65.9) | 121 (59.6) |
 Blacks | 455 (23.6%) | 117 (24.7%) | 193 (23.3) | 59 (29.1) |
 Asian or Pacific Islander | 178 (9.2%) | 46 (9.7%) | 79 (9.6) | 21 (10.3) |
 Native American/Alaska Native | 13 (0.7%) | 3 (0.6%) | 10 (1.2) | 2 (1.0) |
Grade | ||||
 G1 | 76 (3.9%) | 4 (0.8%) | 22 (2.7) | 3 (1.5) |
 G2 | 91 (4.7%) | 10 (2.1%) | 36 (4.4) | 6 (3.0) |
 G3 | 1763 (91.3%) | 460 (97%) | 769 (93.0) | 194 (95.6) |
T-7th | ||||
 T1/T2 | 1517 (78.6%) | 72 (15.2%) | 657 (79.4%) | 38 (18.7%) |
 T3/T4 | 413 (21.4%) | 402 (84.8%) | 170 (20.6%) | 165 (81.3%) |
N-7th | ||||
 N0 | 1473 (76.3%) | 255 (53.8%) | 650 (78.6) | 114 (56.2) |
 N1 | 281 (14.6%) | 120 (25.3%) | 114 (13.8) | 47 (23.2) |
 N2 | 176 (9.1%) | 99 (20.9%) | 63 (7.6) | 42 (20.7) |
Marital status | ||||
 married | 1002 (51.9%) | 269 (56.8%) | 403 (48.7%) | 115 (56.7%) |
 others | 928 (48.1%) | 205 (43.2%) | 424 (51.3%) | 88 (43.3%) |
Median household income | ||||
 <50000 | 126 (6.5%) | 39 (8.2%) | 48 (5.8) | 15 (7.4) |
 50000-90000 | 1169 (60.6%) | 291 (61.4%) | 505 (61.1) | 125 (61.6) |
 >90000 | 635 (32.9%) | 144 (30.4%) | 274 (33.1) | 63 (31.0) |
Urban-rural coding | ||||
 An urban area with a population of 1 million or more | 1137 (58.9%) | 290 (61.2%) | 506 (61.2) | 119 (58.6) |
 Metropolitan areas with a population of 25-1 million | 444 (23%) | 102 (21.5%) | 203 (24.5) | 48 (23.6) |
 Metropolitan areas with a population of less than 250,000 | 144 (7.5%) | 31 (6.5%) | 45 (5.4) | 14 (6.9) |
 Non-metropolitan area and adjacent | 120 (6.2%) | 31 (6.5%) | 47 (5.7) | 15 (7.4) |
 Non-metropolitan area and not adjacent | 85 (4.4%) | 20 (4.2%) | 26 (3.1) | 7 (3.4) |
 Time from diagnosis to treatment (day) | 28（15-42） | 23（8-36） | 28(16-42) | 18(4-33.5) |
 Tumor size | 57（40-80） | 75（55-100） | 60(40-81.5) | 75(50-110) |
 Age | 67（61-73） | 65（59-72） | 67（61-74） | 65（58-72） |