Skip to main content

Table 2 Baseline patient characteristics before and after propensity score matching

From: Effectiveness of polymyxin B hemoperfusion for sepsis depends on the baseline SOFA score: a nationwide observational study

Variable Unmatched groups Matched groups
PMX
(n = 2191)
Control (n = 41,986) ASD (%) PMX
(n = 2033)
Control
(n = 2033)
ASD (%)
Age       
 50 167 (7.6) 2477 (5.9) 5.7 159 (7.8) 144 (7.1) 2.3
 51–70 640 (29.2) 9,048 (21.6) 14.7 593 (29.2) 674 (33.2) 7.0
 > 70 1384 (63.1) 30,461 (16.8) 16.8 1281 (63.0) 1215 (59.8) 5.4
Sex (male) 1282 (58.5) 22,234 (9.1) 9.1 1183 (58.2) 1231 (60.6) 3.9
Emergency admission 1963 (89.6) 40,447 (23.5) 23.5 1835 (90.3) 1839 (90.5) 0.5
CCI       
 0 529 (24.1) 9,798 (23.3) 1.6 492 (24.2) 488 (24.0) 0.4
 1 457 (20.9) 10,388 (24.7) 7.5 420 (20.7) 421 (20.7) 0.1
 2 498 (22.7) 9,383 (22.3) 0.7 460 (22.6) 441 (21.7) 1.8
 3 707 (32.3) 12,417 (29.6) 4.8 661 (32.5) 683 (33.6) 1.9
University hospital 490 (22.4) 4383 (10.4) 28.1 449 (22.1) 496 (24.4) 4.4
Max noradrenaline       
 < 5 483 (22.0) 30,812 (73.4) 96.8 476 (23.4) 416 (20.5) 5.9
 5–9.9 402 (18.3) 4292 (10.2) 19.9 372 (18.3) 384 (18.9) 1.2
 10–15.9 577 (26.3) 3691 (8.8) 41.7 528 (26.0) 560 (27.5) 2.9
16 729 (33.3) 3191 (7.6) 60.3 657 (32.3) 673 (33.1) 1.4
CHDF 1440 (65.7) 2715 ( 6.5) 142.4 1284 (63.2) 1297 (63.8) 1.1
HD 94 (4.3) 1119 (2.7) 7.5 90 (4.4) 118 (5.8) 5.0
Mechanical ventilation 1471 (67.1) 5430 (12.9) 114.8 1326 (65.2) 1352 (66.5) 2.2
Surgery 1200 (54.8) 3912 (9.3) 99.6 1048 (51.5) 1024 (50.4) 1.9
ER/ICU admission 1596 (72.8) 12,260 (29.2) 78.9 1469 (72.3) 1573 (77.4) 9.7
γ-Globulin 718 (32.8) 2417 (5.8) 66.6 620 (30.5) 593 (29.2) 2.4
rTM 1091 (49.8) 2353 (5.6) 104.8 946 (46.5) 901 (44.3) 3.6
AT III 538 (24.6) 1078 (2.6) 64.1 455 (22.4) 433 (21.3) 2.1
Steroid 1023 (46.7) 6847 (16.3) 59.5 941 (46.3) 996 (49.0) 4.4
RBC transfusion 881 (40.2) 3301 (7.9) 73.7 785 (38.6) 774 (38.1) 0.9
Platelet transfusion 424 (19.4) 1336 (3.2) 49.0 380 (18.7) 387 (19.0) 0.7
  1. CCI Charlson Comorbidity Index, CHDF continuous hemodiafiltration, HD hemodialysis, ER emergency room, ICU intensive care unit, rTM recombinant thrombomodulin, AT antithrombin, RBC red blood cell