Table 1.
Prevalence of twin pregnancies in Brazil according to regions and states, Brazil, SINASC 2011-2014.
| Regions and states | Twin pregnancy | Single pregnancy | Cramer V | HDI∗ |
|---|---|---|---|---|
| n (%) | n (%) | |||
| Midwestern region | 10 581 (1.14) | 914 414 (98.86) | 0.0075 | |
| Federal District | 2 572 (1.28) | 197 913 (98.72) | 0.839 | |
| Mato Grosso | 2 322 (1.11) | 207 046 (98.89) | 0.762 | |
| Mato Grosso do Sul | 1 752 (1.04) | 166 501 (98.96) | 0.766 | |
| Goiás | 3 935 (1.13) | 342 954 (98.87) | 0.750 | |
| Northeast region | 34 077 (1.03) | 3 258 671 (98.97) | 0.0071 | |
| Alagoas | 1 954 (0.95) | 204 121 (99.05) | 0.667 | |
| Bahia | 9 088 (1.12) | 803 939 (98.88) | 0.703 | |
| Ceará | 4 917 (0.98) | 497 924 (99.02) | 0.716 | |
| Maranhão | 4 236 (0.92) | 454 561 (99.08) | 0.678 | |
| Paraíba | 2 427 (1.07) | 224 127 (98.93) | 0.701 | |
| Pernambuco | 6 146 (1.09) | 556 947 (98.91) | 0.709 | |
| Piauí | 1 959 (1.01) | 192 413 (98.99) | 0.678 | |
| Rio Grande do Norte | 1 900 (1.01) | 186 719 (98.99) | 0.717 | |
| Sergipe | 1 450 (1.04) | 137 940 (98.96) | 0.681 | |
| North region | 10 726 (0.86) | 1 230 415 (99.14) | 0.0058 | |
| Acre | 645 (0.93) | 68 405 (99.07) | 0.719 | |
| Amazonas | 2 505 (0.81) | 306 891 (99.19) | 0.709 | |
| Amapá | 543 (0.85) | 63 058 (99.15) | 0.747 | |
| Pará | 4 756 (0.86) | 548 027 (99.14) | 0.675 | |
| Rondônia | 1 042 (0.97) | 106 712 (99.03) | 0.715 | |
| Roraima | 319 (0.76) | 41 755 (99.24) | 0.732 | |
| Tocantins | 916 (0.95) | 95 567 (99.05) | 0.732 | |
| Southeast region | 56 167 (1.23) | 4 512 604 (98.77) | 0.0037 | |
| Espírito Santo | 2 517 (1.18) | 210 847 (98.82) | 0.771 | |
| Minas Gerais | 12 683 (1.23) | 1017 576 (98.77) | 0.769 | |
| Rio de Janeiro | 10 278 (1.15) | 879 631 (98.85) | 0.778 | |
| São Paulo | 30 689 (1.26) | 2 404 550 (98.74) | 0.819 | |
| South region | 18 450 (1.21) | 1 505 602 (98.79) | 0.0050 | |
| Paraná | 7 220 (1.18) | 607 078 (98.82) | 0.790 | |
| Rio Grande do Sul | 7 118 (1.28) | 547 985 (98.72) | 0.779 | |
| Santa Catarina | 4 112 (1.16) | 350 539 (98.84) | 0.813 | |
|
| ||||
| Total | 130 001 (1.13) | 11 421 706 (98.87) | 0.0116 | 0.761 |
∗Ranking of HDI-2014.