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Table 2 Demographic and clinical characteristics

From: Antithrombotic drugs do not increase intraoperative blood loss in emergency gastrointestinal surgery: a single-institution propensity score analysis

 Before matchingAfter matching
 ATControlSMDATControlSMD
Subjects1701014 113113 
Age, years (range)79 (84–68)59 (73–33)1.1777 (84–69)77 (84–69)0.00
Gender, male101 (59.4)573 (56.5)0.0473 (64.6)73 (64.6)0.00
Type of surgery      
 Gastrectomy1 (0.6)11 (1.1)− 0.141 (0.9)1 (0.9)0.00
 Patch repair duodenal ulcer5 (2.9)56 (5.5)− 0.053 (2.7)3 (2.7)0.00
 Intestinal surgery78 (45.9)252 (24.9)− 0.1360 (53.1)60 (53.1)0.00
 Colorectal surgery42 (24.7)129 (12.7)0.4528 (24.8)28 (24.8)0.00
 Stoma creation18 (10.6)85 (8.4)0.317 (6.2)7 (6.2)0.00
 Appendectomy23 (13.5)437 (43.1)0.0813 (11.5)13 (11.5)0.00
 Cholecystectomy3 (1.8)44 (4.3)− 0.701 (0.9)1 (0.9)0.00
Surgical approach      
 Laparotomy154 (90.6)60 (59.5)− 0.15103 (91.2)104 (92.0)− 0.03
 Laparoscopy16 (9.4)411 (40.5)0.7710 (8.8)9 (8.0)0.03
Comorbidities      
 Diabetes mellitus43 (25.3)87 (8.6)0.4627 (23.9)21 (18.6)0.13
 Renal failure21 (12.4)30 (3.0)0.3612 (10.6)4 (3.5)0.3
 Liver cirrhosis6 (3.5)20 (2.0)0.093 (2.7)3 (2.7)0.00
 Coronary artery disease58 (34.1)9 (0.9)0.9836 (31.9)2 (1.8)0.88
 Atrial fibrillation39 (22.9)18 (1.8)0.6826 (23.0)5 (4.4)0.57
 Cerebrovascular disease46 (27.1)11 (1.1)0.8133 (29.2)4 (3.5)0.74
 Deep vein thrombosis14 (8.2)11 (1.1)0.349 (8.0)3 (2.7)0.24
 Hypertension120 (70.6)259 (25.5)1.0179 (69.9)51 (45.1)0.52
 Malignancy63 (37.1)208 (20.5)0.3735 (31.0)31 (27.4)0.08
  1. Data are presented as number (percentage) or median (interquartile)
  2. AT antithrombotic drug group, SMD standardized mean difference