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Table 1 Baseline characteristics in the BT group and NBT group

From: Association of intra-operative red blood cell transfusion on the systemic immune index and recovery in patients undergoing cesarean section: a large propensity score-matched study

 

Original cohort

P

Matched cohort

P

BT group (n = 322)

NBT group (n = 909)

BT group (n = 312)

NBT group (n = 312)

Age (mean ± SD, years)

33.49 ± 4.51

32.97 ± 4.23

0.066

33.49 ± 4.51

32.97 ± 4.26

0.139

BMI (kg/m2)

27.5 (23.5–35.3)

26.0 (21.7–33.6)

0.425

27.5 (23.5–35.3)

26.0 (20.7–32.6)

0.526

ASA (n,%)

     

0.811

I–II

283(87.5%)

842(92.6%)

0.005

273(87.5%)

271(86.9%)

 

III

39(12.5%)

67(7.4%)

 

39(12.5%)

41(13.1%)

 

Age at delivery (mean ± SD, days)

273.11 ± 22.11

272.66 ± 20.66

0.745

273.11 ± 22.11

274.66 ± 20.36

0.363

Birthweight (mean ± SD, g)

3488.31 ± 1006.69

3073.16 ± 1078.84

 < 0.001

3488.31 ± 1006.69

3423.16 ± 1086.85

0.262

Mode of anesthesia (n,%)

  

0.192

  

0.893

General

41(10%)

69(7.6%)

 

31(10%)

30(9.6%)

 

Neuraxial

281(90%)

840(92.4%)

 

281(90%)

282(90.4%)

 

Primary cause of PPH (n,%)

  

0.987

  

0.993

Uterine atony

128(41%)

378(41.8%)

 

128(41.0%)

127(40.8%)

 

Placenta accreta

80(22.4%)

195(21.5%)

 

70(22.4%)

68(21.9%)

 

Retained placenta

102(32.6%)

300(33%)

 

102(32.6%)

104(33.2%)

 

Others

12(4%)

36(3.7%)

 

12(4%)

13(4.1%)

 

Operation time (mean ± SD, min)

55.20 ± 8.54

42.64 ± 7.83

 < 0.001

55.20 ± 8.54

40.64 ± 7.13

 < 0.001

Blood loss (mean ± SD, ml)

831.65 ± 78.35

241.39 ± 83.61

 < 0.001

831.65 ± 78.35

236.39 ± 80.21

 < 0.001

Pre-Hgb (mean ± SD, g/dl)

101.72 ± 33.28

119.67 ± 25.33

 < 0.001

101.72 ± 33.28

112.67 ± 45.33

 < 0.001

Obstetrician experience

  

0.427

  

0.878

 < 5 years

39(9%)

69(7.6%)

 

29(9%)

27(8.6%)

 

5 years or more

283(91%)

840(92.4%)

 

283(91%)

285(91.4%)

 
  1. BMI body mass index, IQR inter-quartile range, ASA American Society of Anesthesiologists score, PPH postpartum hemorrhage