Table 3.
1982 | 1993 | 2004 | Pooled cohorts | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Deaths/Births (PMR)* | Crude OR (95%CI) | Adjusted OR (95%CI) ¹ | Deaths/Births (PMR)* | Crude OR (95%CI) | Adjusted OR (95%CI) ¹ | Deaths/Births (PMR)* | Crude OR (95%CI) | Adjusted OR (95%CI) ¹ | P valuec | Deaths/Births (PMR)* | Crude OR (95%CI)2 | Adjusted OR (95%CI) 3 | |
Maternal age, y | 0.859 | ||||||||||||
< 16 | 2/65 (30.8) |
1.2 (0.4; 8.7) |
1.9 (0.4; 8.7) |
2/108 (18.5) |
1.0 (0.2; 4.2) |
0.8 (0.2; 3.4) |
5/113 (44.2) |
2.6 (1.0; 6.6) |
1.7 (0.5; 5.0) |
9/286 (31.5) |
1.9 (1.0; 3.8) |
1.4 (0.7; 2.9) |
|
16-19 | 23/852 (27.0) |
1.0 (0.6; 1.6) |
1.1 (0.6; 2.2) |
14/810 (17.3) |
0.9 (0.5; 1.7) |
0.8 (0.4; 1.5) |
10/685 (14.6) |
0.8 (0.4; 1.7) |
0.7 (0.3; 1.5) |
47/2,347 (20.0) |
1.0 (0.7; 1.4) |
0.8 (0.6; 1.2) |
|
20-29 | 90/3,424 (26.3) |
1.0 | 1.0 | 51/2,779 (18.4) |
1.0 | 1.0 | 37/2,079 (17.8) |
1.0 | 1.0 | 178/8,282 (21.5) |
1.0 | 1.0 | |
P-value | 0.972 a | 0.707 a | 0.979 a | 0.752a | 0.163 a | 0.265 a | 0.241 a | 0.373 a | |||||
0.838 b | 0.475 b | 0.885 b | 0.474 b | 0.376 b | 0.887 b | 0.313 b | 0.934 b | ||||||
Maternal age, y | 0.725 | ||||||||||||
< 20 | 25/917 (27.3) |
1.0 (0.7; 1.6) |
1.2 (0.6; 2.3) |
16/918 (17.4) |
0.9 (0.9; 1.7) |
0.8 (0.4; 1.5) |
15/798 (18.8) |
1.1 (0.6; 1.9) |
0.8 (0.4; 1.7) |
56/2,633 (21.3) |
1.1 (0.8; 1.5) |
0.9 (0.6; 1.3) |
|
20-29 | 90/3,424 (23.4) |
1.0 | 1.0 | 51/2,779 (18.4) |
1.0 | 1.0 | 37/2,079 (17.8) |
1.0 | 1.0 | 178/8,282 (21.5) |
1.0 | 1.0 | |
P-value | 0.870 a | 0.599 a | 0.855 a | 0.451 a | 0.858 a | 0.545 a | 0.625 a | 0.540 a |
Pelotas, Brazil, 1982, 1993, and 2004
* PMR (perinatal mortality rate) = number of perinatal deaths per 1,000 births (stillbirths and live births).
a Likelihood ratio test.
b Likelihood ratio test for trend.
c Likelihood ratio test for interaction.
¹ Adjusted for family income, maternal schooling, maternal skin color, marital status, and parity.
2 Adjusted for cohort year.
3 Adjusted for variables in model 1 plus model 2.