Table 2.
Absolute change (per 1000) and relative change in mortality from pregnancy week 23 to 1 month after birth by sex of child for non-immigrants in Norway, 1967–2005
| |
Absolute change |
Relative change |
||||
|---|---|---|---|---|---|---|
| Coefficient | 95% CI | Coefficient | 95% CI | Coefficient | 95% CI | |
| Boy |
24.094 |
23.567, 24.622 |
19.647 |
19.272, 20.002 |
1.245 |
1.191, 1.301 |
| Girl |
19.406 |
18.863, 19.949 |
15.958 |
15.583, 16.334 |
1.000 |
|
| Boy * (Year - 1967) |
−1.116 |
−1.183, -1.048 |
−0.466 |
−0.483,−0.449 |
0.956 |
0.954, 0.957 |
| Girl * (Year-1967) |
−0.867 |
−0.936, −0.798 |
−0.370 |
−0.387, −0.353 |
0.958 |
0.956, 0.960 |
| Boy * (Year - 1967)2 |
0.017 |
0.015, 0.019 |
|
|
|
|
| Girl * (Year - 1967)2 |
0.013 |
0.011, 0.015 |
|
|
|
|
| Test for equal average trends for boys and girls: |
|
|
p < 0.001 |
|
p = 0.132 |
|
| N | 1,974,811 | |||||
Linear probability and logistic regression analyses. Pregnancies with gestational length >22.