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Table 1 Characteristics of the gastric GIST patients before and after propensity score matching

From: The prognostic value of gender in gastric gastrointestinal stromal tumors: a propensity score matching analysis

Characteristic Before matching After matching
Total, n (%) Male, n = 512 (%) Female, n = 538 (%) P value Male, n = 448 (%) Female, n = 448 (%) P value
Age (years) 1050 64.6 ± 13.0 63.6 ± 14.0 0.230 64.7 ± 13.0 64.3 ± 13.3 0.671
Race     0.858    0.501
 Others 139 (13.2) 65 (12.7) 74 (13.8)   56 (12.5) 68 (15.2)  
 White 651 (62.0) 321 (62.7) 330 (61.4)   285 (63.6) 274 (61.1)  
 Black 260 (24.8) 126 (24.6) 134 (13.8)   107 (23.9) 106 (23.7)  
Marital status     < 0.001    0.070
 Married 594 (56.6) 321 (62.7) 273 (50.7)   279 (62.3) 239 (53.3)  
 Unmarried 456 (43.4) 191 (37.3) 265 (49.3)   169 (37.7) 209 (46.7)  
Grade     0.291    0.929
 Well differentiated 531 (50.6) 247 (48.2) 284 (52.8)   230 (51.3) 222 (49.6)  
 Moderately differentiated 315 (30.0) 154 (30.1) 161 (29.9)   137 (30.6) 140 (31.2)  
 Poorly differentiated 90 (8.6) 48 (9.4) 42 (7.8)   39 (8.7) 39 (8.7)  
 Undifferentiated 114 (10.8) 63 (12.3) 51 (9.5)   42 (9.4) 47 (10.5)  
Surgical treatment     0.032    1.000
 No surgery 31 (3.0) 21 (4.1) 10 (1.9)   8 (1.8) 8 (2.0)  
 Underwent surgery 1019 (97.0) 491 (95.9) 528 (98.1)   440 (98.2) 440 (98.0)  
Tumor size     0.001    0.145
 ≤ 2 cm 174 (16.6) 68 (13.3) 106 (19.7)   67 (15.0) 85 (19.0)  
 2.1–5.0 cm 410 (39.0) 190 (37.1) 220 (40.9)   181 (40.4) 185 (41.3)  
 5.1–10 cm 255 (24.3) 131 (25.6) 124 (23.0)   121 (27.0) 95 (21.2)  
 > 10 cm 211 (20.1) 123 (24.0) 88 (16.4)   79 (17.6) 83 (18.5)  
Mitotic index/50 HPF     0.044    0.194
 ≤ 5 840 (80.0) 394 (77.0) 446 (82.9)   348 (77.7) 368 (82.2)  
 6–10 86 (8.2) 46 (8.9) 40 (7.4)   44 (9.8) 31 (6.9)  
 > 10 124 (11.8) 72 (14.1) 52 (9.7)   56 (12.5) 49 (10.9)