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Table 1 Baseline patient characteristics in the unmatched and propensity score-matched groups

From: Low-dose corticosteroid treatment and mortality in refractory abdominal septic shock after emergency laparotomy

Characteristics Unmatched Propensity-score matched
Control, n = 2009 Corticosteroid, n = 155 Standardized, difference, % Control, n = 2164 Corticosteroid, n = 2101 Standardized difference, %
Age (year) 74.8 (11.5) 75.1 (10.6) −2.2 74.8 (11.5) 75.5 (10.1) −5.9
Sex (male) 1049 (52.2) 62 (40.0) 24.7 1111 (51.3) 1009 (48.0) 6.6
Hospital type (academic) 489 (24.3) 42 (27.1) −6.3 532 (24.6) 583 (27.7) −7.2
Hospital volume, cases      0.0      
 Low, 1–4 673 (33.5) 52 (33.5) −0.1 725 (33.5) 659 (31.4) 4.6
 Medium, 5–9 736 (36.6) 71 (45.8) −18.7 807 (37.3) 821 (39.1) −3.6
 High, 10– 600 (29.9) 32 (20.6) 21.3 632 (29.2) 622 (29.6) −0.8
Coexisting disease
 Diabetes 221 (11.0) 17 (11.0) 0.1 238 (11.0) 200 (9.5) 4.9
 Old myocardial infarction 42 (2.1) 1 (0.6) 12.5 43 (2.0) 27 (1.3) 5.5
 Pneumonia 129 (6.4) 9 (5.8) 2.6 138 (6.4) 139 (6.6) −1.0
 Chronic renal failure 161 (8.0) 7 (4.5) 14.5 168 (7.8) 117 (5.6) 8.8
 Disseminated intravascular coagulation 959 (47.7) 81 (52.3) −9.1 1040 (48.1) 1065 (50.7) −5.3
Consciousness level (JCS score)      0.0      
 Alert 1385 (68.9) 108 (69.7) −1.6 1493 (69.0) 1367 (65.1) 8.4
 Delirium 343 (17.1) 24 (15.5) 4.3 367 (17.0) 391 (18.6) −4.3
 Somnolence 116 (5.8) 10 (6.5) −2.8 126 (5.8) 168 (8.0) −8.6
 Coma 165 (8.2) 13 (8.4) −0.6 178 (8.2) 175 (8.3) −0.4
  1. IVIG intravenous immunoglobulin, JCS Japan Coma Scale