Table 2 Comparison by transfusion status with effect estimates effect estimates are reported with 95% confidence intervals; p-values adjusted using the Bonferroni–Holm method.

From: Risk factors for blood transfusion during cesarean section in women with major placenta previa

Characteristic

No transfusion (n = 90)

Transfusion (n = 20)

Effect estimate (95% CI)

Raw p

Corrected p

Age (years)

34.8 (4.9)

34.6 (4.4)

Mean diff − 0.20 (− 2.38 to 1.98)

0.890

1.000

Gestational week at cesarean

33.9 (3.2)

32.2 (4.3)

Mean diff − 1.70 (− 3.70 to 0.30)

0.108

0.539

Elective cesarean

40 (44.4%)

8 (40.0%)

OR 0.83 (0.31–2.23)

0.717

1.000

Antepartum bleeding

69 (76.7%)

17 (85.0%)

OR 1.72 (0.46–6.46)

0.556

1.000

Previous cesarean

16 (17.8%)

10 (50.0%)

OR 4.63 (1.65–12.95)

0.007

0.049

ART

14 (15.6%)

3 (15.0%)

OR 0.96 (0.25–3.71)

1.000

1.000

Previous curettage

29 (32.2%)

12 (60.0%)

OR 3.16 (1.16–8.56)

0.020

0.120

  1. After Bonferroni–Holm correction, only previous cesarean section remained statistically significant (corrected p = 0.049).