Table 1

Demographic, socioeconomic and healthcare characteristics of mothers and newborns, and number and proportion of municipalities with more than 1000 births/year according to CS rates, Brazil 2015

Number%95% CI
Maternal age (years)
 <20530 73818.2718.23 to 18.32
 20–342 003 17368.9868.93 to 69.04
 35+369 77912.7312.70 to 12.77
Parity
 01 059 02538.7438.70 to 38.81
 1851 41231.1431.10 to 31.21
 2+823 03230.130.07 to 30.17
Maternal schooling (years)
 0–4162 6845.735.71 to 5.76
 8–5738 47726.0225.97 to 26.07
 12–91 408 77849.6449.58 to 49.70
 >12527 91718.618.56 to 18.65
Marital status
 Single1 242 33243.2343.18 to 43.29
 Living with partner1 631 05856.7656.71 to 56.82
Mode of delivery
 Vaginal1 289 89045.4544.40 to 44.51
 Caesarean section1 611 78855.5455.49 to 55.60
Previous caesarean
section*
 No881 18655.1755.10 to 55.25
 Yes716 54844.8244.79 to 44.94
Gestational age (weeks)
 <37286 20410.1110.07 to 10.14
 37–38844 47229.8229.77 to 29.88
 39–411 612 18656.9356.88 to 57.00
 42+88 6333.133.11 to 3.15
Birth weight (g)
 <2500210 4147.257.22 to 7.28
 2500 –2999658 62822.722.65 to 22.75
 3000–39991 881 01064.8364.78 to 64.89
 4000+151 3555.215.19 to 5.24
 All2 903 716100
Municipalities <30% CS397.55.5 to 10.1
Municipalities 30%–39.9% CS5410.48.1 to 13.3
Municipalities 40%–49.9% CS9418.115.0 to 21.6
Municipalities 50%–59.9% CS11321.718.4 to 25.4
Municipalities 60%–69.9% CS11822.719.3 to 26.4
Municipalities 70%–79.9% CS7414.211.5 to 27.5
Municipalities ≥80% CS285.43.8 to 7.7
All municipalities520100
  • Missing cases: maternal age (0.1%), parity (5.9%), maternal schooling (2.3%), marital status (2.1%), mode of delivery (0.1%), previous CS (8.5%), gestational age (2.5%), birth weight (0.1%).

  • *Only parous women were included.

  • CS, caesarean section.