Period of birth | ||||||
---|---|---|---|---|---|---|
1967-71 | 1972-76 | 1977-81 | 1982-85 | 1986-89 | 1990-93 | |
SIDS | ||||||
Maternal age (years) | ||||||
⩽19 | 1.47 | 1.85 | 2.94 | 4.22 | 5.54 | 2.74 |
20-24 | 1.39 | 1.41 | 2.06 | 2.90 | 3.31 | 1.43 |
25-29 | 1.00 | 1.13 | 1.40 | 1.60 | 1.89 | 0.85 |
30-34 | 0.72 | 0.96 | 1.23 | 1.80 | 1.61 | 0.50 |
⩾35 | 0.69 | 0.53 | 1.08 | 1.39 | 1.23 | 0.58 |
Birth order | ||||||
1 | 0.74 | 1.04 | 1.32 | 1.61 | 1.63 | 0.61 |
2 | 1.47 | 1.40 | 2.06 | 2.45 | 2.77 | 1.02 |
3 | 1.41 | 1.50 | 1.82 | 2.94 | 2.91 | 1.31 |
4+ | 1.14 | 1.18 | 1.77 | 2.26 | 3.83 | 1.81 |
Marital status | ||||||
Married | 1.06 | 1.20 | 1.57 | 2.02 | 2.13 | 0.80 |
Unmarried | 2.22 | 1.73 | 2.48 | 2.70 | 2.78 | 1.17 |
Cohabiting | — | — | — | — | 2.14 | 0.83 |
Single | — | — | — | — | 3.90 | 2.32 |
Non-SIDS | ||||||
Maternal age (years) | ||||||
⩽19 | 4.00 | 3.64 | 3.37 | 2.79 | 2.68 | 2.74 |
20-24 | 3.28 | 2.82 | 2.53 | 2.61 | 2.57 | 2.04 |
25-29 | 3.05 | 2.65 | 2.18 | 2.03 | 2.14 | 1.79 |
30-34 | 3.48 | 2.94 | 2.11 | 1.90 | 2.46 | 2.18 |
⩾35 | 4.75 | 4.32 | 2.76 | 1.78 | 3.01 | 2.23 |
Birth order | ||||||
1 | 3.21 | 2.82 | 2.58 | 2.19 | 2.37 | 2.00 |
2 | 3.22 | 2.63 | 2.16 | 2.36 | 2.27 | 1.83 |
3 | 3.56 | 3.38 | 2.46 | 1.88 | 2.51 | 2.17 |
4+ | 4.53 | 4.21 | 2.82 | 2.34 | 3.74 | 2.99 |
Marital status | ||||||
Married | 3.37 | 2.86 | 2.25 | 2.08 | 2.45 | 2.05 |
Unmarried | 4.69 | 3.80 | 3.41 | 2.65 | 2.39 | 2.00 |
Cohabiting | — | — | — | — | 2.32 | 1.93 |
Single | — | — | — | — | 2.41 | 2.27 |