Table 4.
Caesarean section rates (%) per Robson group in high and low risk women according to source of payment. Birth in Brazil study, 2011–2012
| Robson group | Public | Private | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Low risk women1 | High risk women2 | Low risk women1 | High risk women2 | |||||||||||||
| All | CS | % | 95 % CIa | All | CS | % | 95 % CIa | All | CS | % | 95 % CIb | All | CS | % | 95 % CIb | |
| All groups | 14,640 | 5,168 | 35.3 | (33.0–37.6) | 4,484 | 3,036 | 67.7 | (64.9–70.4) | 3,573 | 3,082 | 86.3 | (81.2–90.1) | 1,190 | 1,104 | 92.8 | (89.5–95.0) |
| 1 | 3,475 | 477 | 13.7 | (11.2–16.6) | 550 | 236 | 42.9 | (36.8–49.2) | 253 | 110 | 43.4 | (33.8–53.4) | 54 | 26 | 48.7 | (29.9–67.8) |
| 2 | 2,114 | 1,465 | 69.3 | (63.9–74.2) | 1,002 | 885 | 88.4 | (85.2–91.0) | 1,425 | 1,376 | 96.6 | (91.4–98.7) | 444 | 441 | 99.0 | (96.9–99.7) |
| 3 | 3,886 | 137 | 3.5 | (2.6–4.7) | 636 | 97 | 15.3 | (11.2–20.4) | 214 | 23 | 10.7 | (6.5–17.2) | 41 | 7 | 16.1 | (7.6–30.9) |
| 4 | 911 | 434 | 47.6 | (42.1–53.2) | 467 | 324 | 69.3 | (62.9–75.1) | 220 | 192 | 87.3 | (77.7–93.1) | 85 | 77 | 90.4 | (82.2–95.0) |
| 5 | 2,410 | 1,799 | 74.7 | (71.3–77.8) | 866 | 756 | 87.3 | (84.3–89.7) | 1,002 | 978 | 97.6 | (95.7–98.7) | 284 | 283 | 99.6 | (97.5–100.0) |
| 8 | 125 | 95 | 75.7 | (66.4–83.1) | 67 | 59 | 88.6 | (79.6–93.9) | 67 | 62 | 92.3 | (63.0–98.8) | 25 | 25 | 100.0 | - |
| 10 | 1,208 | 306 | 25.4 | (21.8–29.2) | 694 | 497 | 71.4 | (65.4–76.8) | 222 | 172 | 77.6 | (67.5–85.3) | 201 | 190 | 94.9 | (88.3–97.9) |
| 6, 7 and 9 | 511 | 455 | 89.1 | (81.4–93.9) | 202 | 182 | 90.3 | (83.0–94.6) | 170 | 169 | 99.4 | (97.4–99.9) | 56 | 55 | 98.7 | (91.4–99.8) |
1women without any of high risk characteristics
2hypertensive disorders, eclampsia, preexisting diabetes, gestational diabetes, severe chronic diseases, infection at hospital admission for birth, placental abruption, placenta previa, intrauterine growth restriction and major newborn malformation
aLow risk women vs. high risk women proportions of CS differed significantly from each other at the .05 level by means of z-test with Bonferroni adjustment for all Robson groups, except for groups 6, 7 and 9 combined
bLow risk women vs. high risk women proportions of CS DID NOT differ significantly from each other at the .05 level by means of z-test with Bonferroni adjustment for all Robson group, except for group 10