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Table 1 Distribution of the absolute frequency of sociodemographic, perinatal and neonatal characteristics with the respective mortality percentages according to the MHDI classification in Porto Alegre (Rio Grande do Sul, Brazil) from 2000 to 2017

From: The influence of the municipal human development index and maternal education on infant mortality: an investigation in a retrospective cohort study in the extreme south of Brazil

  MHDI
MEDIUM
n(%)
HIGH
n(%)
VERY HIGH
n(%)
TOTAL DEATH TOTAL DEATH TOTAL DEATH
Maternal Age
 10 to 17 years 5540 (10.6) 86 (1.6)a 15,708 (8.6) 218 (1.4)a 3628 (4.4) 66 (1.8)a
 18 to 34 years 40,411 (77.5) 446 (1.1) 140,685 (77.2) 1358 (1.1) 58,530 (70.5) 436 (0.7)
  ≥ 35 years 6170 (11.9) 80 (1.3) 25,859 (14.2) 280 (1.1) 20,907 (25.2) 132 (0.6)
  52,121 (100) 612 (1.2) 182,252 (100) 1856 (1.1) 83,065 (100) 634 (0.8)
Maternal Education
  < 8 years 20,301 (39.2) 301 (1.5)a 59,084 (32.5) 867 (1.5)a 13,486 (16.3) 205 (1.5)a
  ≥ 8 to 11 years 24,981 (48.2) 251 (1.0) 83,658 (46.1) 752 (0.9) 25,528 (30.8) 216 (0.8)a
  ≥ 12 years 6541 (12.6) 50 (0.8) 38,806 (21.4) 224 (0.6) 43,780 (52.9) 205 (0.5)
  51,823 (100) 602 (1.2) 181,548 (100) 1843 (1.0) 82,794 (100) 626 (0.8)
Marital Status
 Single/Separated/Widowed 37,022 (71.3) 452 (1.2) 123,195 (67.8) 1428 (1.2)a 43,144 (52.1) 434 (1.0)a
 Married/stable union 14,937 (28.7) 156 (1.0) 58,639 (32.2) 416 (0.7) 39,739 (47.9) 192 (0.5)
  51,959 (100) 608 (1.2) 181,834 (100) 1844 (1.0) 82,883 (100) 626 (0.8)
Parity
 Primipara 20,293 (39) 221 (1.1) 78,595 (43.2) 685 (0.9) 43,217 (52.1) 273 (0.6)
 Multipara 31,684 (61) 388 (1.2) 103,341 (56.8) 1162 (1.1)a 39,707 (47.9) 355 (0.9)a
  51,977 (100) 609 (1.2) 181,936 (100) 1847 (1.0) 82,924 (100) 628 (0.8)
Number of Dead Children
  ≥ 1 5038 (9.7) 67 (1.3) 17,376 (9.5) 225 (1.3)a 8038 (9.7) 83 (1.0)a
 None 47,067 (90.3) 545 (1.2) 164,833 (90.5) 1630 (1.0) 75,008 (90.3) 550 (0.7)
  52,105 (100) 612 (1.2) 182,209 (100) 1855 (1.0) 83,046 (100) 633 (0.8)
Number Prenatal Care Consultations
 None 1844 (3.6) 78 (4.2)a 6048 (3.3) 286 (4.7)a 1808 (2.2) 92 (5.1)a
 from 1 to 3 5530 (10.7) 137 (2.5)a 15,889 (8.7) 427 (2.7)a 4285 (5.2) 103 (2.4)a
 from 4 to 6 13,463 (26.0) 192 (1.4)a 40,524 (22.3) 518 (1.3)a 11,887 (14.3) 164 (1.4)a
   7 and more 30,993 (59.8) 199 (0.6) 119,233 (65.6) 605 (0.5) 64,885 (78.3) 266 (0.4)
  51,830 (100) 606 (1.2) 181,694 (100) 1836 (1.0) 82,865 (100) 625 (0.8)
Birth
 Vaginal 33,379 (64.0) 361 (1.1) 103,908 (57.0) 1007 (1.0) 32,869 (39.6) 300 (0.9)a
 Cesarean 18,744 (36.0) 252 (1.3)a 78,340 (43.0) 848 (1.1)a 50,196 (60.4) 334 (0.7)
  52,123 (100) 613 (1.2) 182,248 (100) 1855 (1.1) 83,065 (100) 634 (0.8)
Gestational Age
  < 27 weeks 232 (0.4) 133 (57.3)a 790 (0.4) 465 (58.9)a 295 (0.4) 151 (51.2)a
 28 to 31 weeks 473 (0.9) 85 (18.0)a 1523 (0.8) 234 (15.4)a 634 (0.8) 78 (12.3)a
 32 to 36 weeks 4331 (8.3) 123 (2.8)a 14,926 (8.2) 349 (2.3)a 6979 (8.4) 115 (1.6)a
 37 or more 46,967 (90.3) 261 (0.6) 164,641 (90.7) 764 (0.5) 75,032 (90.5) 276 (0.4)
  52,003 (100) 602 (1.2) 181,880 (100) 1812 (1.0) 82,940 (100) 620 (0.7)
Apgar At 5 Minutes
  < 7 686 (1.3) 168 (24.5)a 2205 (1.2) 592 (26.8)a 694 (0.8) 179 (25.8)a
  ≥ 7 50,961 (98.7) 410 (0.8) 178,989 (98.8) 1158 (0.6) 82,091 (99.2) 416 (0.5)
  51,647 (100) 578 (1.1) 181,194 (100) 1750 (1.0) 82,785 (100) 595 (0.7)
Low Weight
 No (≥2500 g) 47,425 (91.0) 262 (0.6) 166,558 (91.4) 762 (0.5) 76,581 (92.2) 268 (0.3)
 Yes (< 2500 g) 4698 (9.0) 351 (7.5)a 15,694 (8.6) 1094 (7.0)a 6485 (7.8) 366 (5.6)a
  52,123 (100) 613 (1.2) 182,252 (100) 1856 (1.0) 83,066 (100) 634 (0.8)
Congenital Anomaly
 Yes 790 (1.5) 153 (19.4)a 2857 (1.6) 469 (16.4)a 1062 (1.3) 168 (15.8)a
 No 50,958 (98.5) 450 (0.9) 178,634 (98.4) 1362 (0.8) 81,668 (98.7) 456 (0.6)
  51,748 (100) 603 (1.2) 181,491 (100) 1831 (1.0) 82,730 (100) 624 (0.8)
Type of Hospital
 Public 25,051 (48.3) 317 (1.3)a 93,969 (51.7) 1135 (1.2)a 28,492 (34.4) 320 (1.1)a
 Mixed 20,679 (39.9) 247 (1.2) 51,443 (28.3) 544 (1.1) 13,217 (16.0) 154 (1.2)a
 Private 6106 (11.8) 34 (0.6) 36,204 (19.9) 125 (0.3) 41,108 (49.6) 126 (0.3)
  51,836 (100) 598 (1.2) 181,616 (100) 1804 (1.0) 82,817 (100) 600 (0.7)
  1. aStatistically significant association by the residue test adjusted to 5% significance. MHDI Municipal Human Development Index. n Number of participants. %: percentage