Table 3 Cumulative incidence of preventable infant deaths, according to contextual, maternal, and infant characteristics. Rio Grande do Sul state, 2017.
| Â | Number of live births | Preventable deaths N (%) | Difference in incidence (p.p.)1 | Gross cumulative incidence ratio (95% CI)2 |
|---|---|---|---|---|
HDI of the health region |  | p = 0,028 |  |  |
 High | 94,903 | 793 (0.84) | Ref. | 1.00 |
 Medium | 33,590 | 326 (0.97) | 0.13 | 1.16 (1.02–1.32) |
Characteristics of the municipality | ||||
 HDI |  | p < 0.001 |  |  |
 Very high/high | 110,830 | 972 (0.88) | Ref. | 1.00 |
 Medium/low | 30,709 | 151 (0.49) | 0.39 | 0.56 (0.47–0.67) |
 Gini index (quartiles) |  | p < 0.001 |  |  |
  1st quartile | 2750 | 89 (3.24) | 2.81 | 7.50 (5.89–9.54) |
  2nd | 53,504 | 231 (0.43) | Ref. | 1.00 |
  3rd | 35,730 | 282 (0.79) | 0.36 | 1.83 (1.54–2.17) |
  4th quartile | 38,839 | 521 (1.34) | 0.91 | 3.11 (2.66–3.63) |
Maternal characteristics | ||||
 Age (years) |  | p = 0.005 |  |  |
   < 20 | 18,163 | 183 (1.01) | 0.34 | 1.50 (1.22–1.85) |
  20–29 | 65,589 | 516 (0.08) | 0.59 | 0.13 (0.99–1.40) |
  30–34 | 32,124 | 211 (0.66) | 0.01 | 0.98 (0.80–1.20) |
   ≥ 35 | 25,690 | 172 (0.67) | Ref. | 1.00 |
 Schooling (years) |  | p = 0.738 |  |  |
  0–7 | 23,794 | 258 (1.08) | 0.53 | 1.98 (1.64–2.38) |
  8–11 | 82,760 | 623 (0.75) | 0.20 | 1.37 (1.17–1.61) |
   ≥ 12 | 34,657 | 190 (0.55) | Ref. | 1.00 |
 Living with a partner |  | p = 0.010 |  |  |
  Yes | 67,789 | 441 (0.65) | Ref. | 1.00 |
  No | 73,320 | 614 (0.84) | 0.19 | 1.29 (1.14–1.45) |
 Skin color |  | p = 0.612 |  |  |
  White | 117,223 | 918 (0.78) | Ref. | 1.00 |
  Mixed | 14,076 | 93 (0.66) | 0.12 | 0.84 (0.68–1.04) |
  Black | 9798 | 44 (0.45) | 0.33 | 0.57 (0.42–0.78) |
 No. antenatal care consultations | p < 0.001 |  |  | |
  0 | 2563 | 76 (2.97) | 2.63 | 8.84 (6.93–11.29) |
  1–3 | 6092 | 224 (3.68) | 3.34 | 10.96 (9.30–12.92) |
  4–6 | 24,462 | 388 (1.59) | 1.25 | 4.73 (4.10–5.45) |
   ≥ 7 | 108,239 | 363 (0.34) | Ref. | 1.00 |
 Type of delivery |  | p < 0.001 |  |  |
  Vaginal | 52,551 | 496 (0.94) | Ref. | 1.00 |
  Caesarean | 88,979 | 580 (0.65) | 0.29 | 0.69 (0.61–0.78) |
Characteristics of the infant at birth | ||||
 Sex |  | p = 0.667 |  |  |
 Male | 72,946 | 633 (0.87) | 0.16 | 1.22 (1.09–1.38) |
 Female | 68,615 | 486 (0.71) | Ref. | 1.00 |
 Gestational age (weeks) |  | p < 0.001 |  |  |
   < 28 | 743 | 427 (57.47) | 57.20 | 213.38 (188.58–241.44) |
  28–31 | 1435 | 165 (11.50) | 11.23 | 42.69 (35.70–51.06) |
  32–36 | 14,421 | 152 (1.05) | 0.78 | 3.91 (3.23–4.74) |
   ≥ 37 | 124,381 | 335 (0.27) | Ref. | 1.00 |
 Low birth weight (<  2500 g) | p < 0.001 |  |  | |
  Yes | 13,279 | 748 (5.63) | 5.37 | 21.63 (19.04–24.58) |
  No | 128,279 | 334 (0.26) | Ref. | 1.00 |
 Type of pregnancy |  | p < 0.001 |  |  |
  Single | 138,067 | 951 (0.69) | Ref. | 1.00 |
  Multiple | 3467 | 132 (3.81) | 3.12 | 5.53 (4.74–6.87) |