Table 2: Maternal outcomes Table 2: Maternal outcomes Table 2: Maternal outcomes Table 2: Maternal outcomes
Low volume (n=70849) High volume (n=70006) p value
Hospitalization length days 2.4±0.8 2.4±1.9 0.06
Prolonged hospitalization stay 446 (0.6%) 421 (0.6%) 0.50
Manual lysis of the placenta 807 (1.1%) 792 (1.1%) 0.89
Manual exploration of uterus for suspected placental products 1557 (2.2%) 1361 (1.9%) <0.01
Any spontaneous perineal tear 22905 (32.3%) 21843 (31.2%) <0.01
1st degree perineal tear 6049 (26.4%) 5593 (25.6%) 0.05
2nd degree perineal tear 6168 (26.9%) 5640 (25.8%) 0.01
3rd /4th degree perineal tear 226 (1%) 188 (0.9%) 0.16
Laceration 221 (1%) 212 (1%) 0.95
Episiotomy 7570 (33%) 7862 (36%) <0.01
Shoulder dystocia 255 (0.4%) 240 (0.4%) 0.85
Maternal ICU admissions 1 (0%) 6 (0%) 0.06
Postpartum hemorrhage 4710 (6.6%) 4562 (6.5%) 0.32
Hemoglobin drop gram/dl 1.2±1 1.2±1 0.25
Hemoglobin drop>4 gram/dl 1416 (2%) 1378 (2%) 0.68
Endometritis 329 (0.5%) 325 (0.5%) 1.00
Parenteral Iron administration 117 (0.2%) 152 (0.2%) 0.03
Blood products transfusion 473 (0.7%) 486 (0.7%) 0.54
Composite Adverse maternal outcome* 6949 (9.8%) 6598 (9.4%) 0.01
Data are mean± standard deviation; number (%); ICU intensive care unit. * included at least one of: 3rd /4th degree perineal tear, shoulder dystocia, maternal ICU admission, postpartum hemorrhage, endometritis and blood products transfusion Data are mean± standard deviation; number (%); ICU intensive care unit. * included at least one of: 3rd /4th degree perineal tear, shoulder dystocia, maternal ICU admission, postpartum hemorrhage, endometritis and blood products transfusion Data are mean± standard deviation; number (%); ICU intensive care unit. * included at least one of: 3rd /4th degree perineal tear, shoulder dystocia, maternal ICU admission, postpartum hemorrhage, endometritis and blood products transfusion Data are mean± standard deviation; number (%); ICU intensive care unit. * included at least one of: 3rd /4th degree perineal tear, shoulder dystocia, maternal ICU admission, postpartum hemorrhage, endometritis and blood products transfusion