Table 3 Multivariable linear regression analysis for postpartum decrease in hemoglobin (ΔHb)
|  | Influence on ΔHb (95% CI) in g/L | Correlation coefficient | p |
|---|---|---|---|
Induction of labor | −3.9 (−5.5 to −2.4) | −0.15 | < 0.001 |
BMI (kg/m2) | 0.1 (−0.0 to 0.3) | 0.05 | 0.09 |
Gestational age in days | 0.0 (− 0.1 to 0.1) | 0.01 | 0.83 |
Maternal age in years | −0.1 (− 0.2 to 0.1) | −0.33 | 0.26 |
Multiparity | −6.1 (−7.7 to −4.4) | −0.23 | < 0.001 |
Second stage of labor > 120 min | 7.4 (5.6 to 9.3) | 0.26 | < 0.001 |
Retained placenta | 15.7 (11.5 to19.9) | 0.22 | < 0.001 |
Retained placental tissue | 11.9 (7.8 to 16.0 | 0.17 | < 0.001 |
Birthweight in g | 0.0 (−0.0 to 0.0) | −0.02 | 0.66 |
Placental abruption | 6.4 (−4.1 to 16.9) | 0.04 | 0.24 |
Repeat cesarean section | 7.8 (−0.8 to 16.4) | 0.06 | 0.07 |
Unplanned cesarean section | 2.7 (−0.6 to 6.1) | 0.05 | 0.11 |
Uterine Atony | 14.7 (11.5 to 17.9) | 0.27 | < 0.001 |
Induction of labor > 48 h | 2.1 (−2.5 to 6.7) | 0.03 | 0.36 |