Characteristic | Primiparous women, % n = 320 094 | Multiparous women, % n = 187 168 |
---|---|---|
Age, yr | ||
18–25 | 22 | 9 |
25–29 | 31 | 24 |
30–34 | 30 | 37 |
35–39 | 14 | 24 |
≥ 40 | 3 | 5 |
Socioeconomic status | ||
Highest | 15 | 17 |
Next to highest | 20 | 21 |
Middle | 20 | 21 |
Next to lowest | 21 | 20 |
Lowest | 23 | 22 |
Home location | ||
Urban | 91 | 89 |
Rural | 9 | 11 |
Prenatal care | ||
≥ 13 clinic visits | 89 | 91 |
≥ 1 emergency department visits | 33 | 33 |
≥ 1 hospital admissions | 39 | 24 |
Pregnancy duration | ||
Preterm | 7 | 6 |
At-term | 79 | 85 |
Post-term | 14 | 9 |
Delivery mode | ||
Vaginal | 69 | 72 |
Cesarean | 31 | 28 |
Perinatal complications | ||
Multiple gestations† | 2 | 1 |
Fetal malposition‡ | 7 | 5 |
Perinatal obstetrical§ | 56 | 39 |
Miscellaneous amniotic¶ | 16 | 9 |
Potential fetal abnormality** | 6 | 5 |
Duration of hospital stay, d | ||
≤ 2 | 55 | 72 |
≥ 3 | 45 | 28 |
Infant sex†† | ||
Girl | 46 | 46 |
Boy | 49 | 48 |
↵* Grouped by first presentation (no repeats in subsequent multipara group).
↵† Includes twins and higher multiples (codes Z372, Z375).
↵‡ Includes malpresentation (code O32).
↵§ Inadequate contractions, obstructed labour, umbilical cord complicated, major perineal trauma, intrapartum hemorrhage, postpartum hemorrhage (codes O62–O75, except O70).
↵¶ Polyhydramnios, oligohydramnios, premature rupture of membranes, amniotic cavity infection (codes O40–O42).
↵** Growth restriction, stillbirth, miscellaneous abnormality of fetus (codes O35–O37).
↵†† Unlisted for 5 infants in the primapara group and 6 in the multipara group.