Skip to main content

Table 2 Unmatched baseline characteristics

From: Mortality and morbidity of low-grade red blood cell transfusions in septic patients: a propensity score-matched observational study of a liberal transfusion strategy

  Unmatched groups Propensity-matched groups
Controls, n = 405 RBCa, n = 459 P-valueb Controls, n = 237 RBC, n = 237 P valuec
SAPS 3d, median (IQRe) 66 (58–77) 71 (62–81) < 0.001 69 (60–80) 69 (59–79) N.S.
First SOFAf 8 (5–10) 9 (6–11) < 0.001 8 (5–11) 8 (5–10) N.S.
Days before ICUg 0 (0–2) 1 (0–5) < 0.001 0 (0–2) 1 (0–3) N.S.
Reasons for admissionh, n (%)
 CNSi 91 (22) 92 (20) N.S. 58 (25) 57 (24) N.S.
 Hematologic 39 (9.6) 64 (14) N.S. 26 (11) 27 (11) N.S.
 Gastric 88 (22) 148 (32) < 0.001 51 (21) 74 (31) 0.02
 Metabolic 82 (20) 95 (21) N.S. 53 (22) 51 (21) N.S.
 Respiratory 188 (146) 239 (52) N.S 111 (47) 130 (55) N.S.
 Cardiovascular 67 (17) 75 (16) N.S. 35 (15) 41 (17) N.S.
 Hepatic 29 (7.2) 43 (9.4) N.S. 22 (9.3) 22 (9.3) N.S.
 Renal 138 (34) 160 (35) N.S. 89 (38) 93 (39) N.S.
 Other 42 (10) 34 (7.4) N.S. 24 (10) 26 (11) N.S.
Arrival route n (%)
 Emergency department 115 (28) 93 (20) 0.007 64 (27) 54 (23) N.S.
 General ward 199 (49) 232 (51) N.S. 128 (54) 120 (51) N.S.
 Intermediate care 7 (1.7) 19 (4.1) 0.046 3 (1.3) 11 (4.6) N.S.
 Operation 30 (7.4) 37 (8.0) N.S. 21 (8.9) 22 (9.2) N.S.
 Other ICU 39 (9.6) 48 (10) N.S. 20 (8.4) 29 (12) N.S.
 Other arrival route 15 (3.7) 30 (6.5) N.S. 1 (0.42) 1 (0.42) N.S.
  1. aRed blood cell transfusion
  2. bMann–Whitney or Chi-2 test
  3. cWilcoxon rank sum or McNemar´s test
  4. dSimplified acute physiology score 3
  5. eInterquartile range
  6. fSequential organ failure assessment
  7. gDays on hospital before admission to the intensive care unit
  8. hPatients may have more than one reason for admission
  9. iCentral nervous system