Table 3 Crude and adjusted ORs (95% CI) for perinatal mortality by maternal age
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 | |||||