Table 4.
Estimates of alcohol- and narcotics-attributable hospitalization or death (ages 30–55), according to birth order and including family type fixed effects. Results from Cox regression analyses.
| Alcohol |
Narcotics |
|||
|---|---|---|---|---|
| Model 1 a |
Model 1 a |
|||
| HR | 95% CI | HR | 95% CI | |
| Birth order | ||||
| Second | 1.05 | 0.94–1.19 | 1.12 | 0.93–1.36 |
| Third | 1.08 | 0.89–1.32 | 1.18 | 0.85–1.62 |
| Fourth | 1.29 | 0.98–1.69 | 1.23 | 0.79–1.93 |
| Fifth | 1.46 | 1.00–2.13 | 1.22 | 0.65–2.30 |
| N | 147,952 | 147,952 | ||
| Events (N) | 5109 | 2110 | ||
Notes: The sample is restricted to families of two to five children in which all children were born 1943–1960.
Reference category is the first-born child. All models are stratified by sex.
HR=Hazard Ratio; CI=Confidence interval; statistical significance: *p < 0.05; **p < 0.01; ***p < 0.001.
a
Stratified by family type, and includes dummy variables for child's year of birth.