Table 4.
Effect of Sibling's Death (From Any Cause) on Mortality From Myocardial Infarction Stratified by Age Category, Socioeconomic Status, Marital Status, Number of Children, and Number of Siblings
| Men | Women | |||
|---|---|---|---|---|
| Age, y | ||||
| 40 to 44 | 0.82 | (0.44 to 1.54) | 0.85 | (0.27 to 2.68) |
| 45 to 49 | 1.31 | (0.97 to 1.77) | 0.71 | (0.31 to 1.62) |
| 50 to 54 | 1.08 | (0.87 to 1.35) | 1.47 | (0.95 to 2.26) |
| 55 to 59 | 1.17 | (0.97 to 1.41) | 1.19 | (0.82 to 1.72) |
| 60 to 64 | 1.17 | (0.97 to 1.41) | 1.30 | (0.92 to 1.82) |
| 65 to 69 | 1.15 | (0.87 to 1.51) | 1.44 | (0.91 to 2.28) |
| Socioeconomic status | ||||
| Blue‐collar worker | 1.08 | (0.94 to 1.25) | 1.23 | (0.92 to 1.66) |
| White‐collar worker | 1.37 | (1.13 to 1.66) | 1.43 | (0.96 to 2.12) |
| Self‐employed | 1.29 | (0.97 to 1.72) | 1.00 | (0.36 to 2.77) |
| Outside labor market | 0.95 | (0.74 to 1.24) | 1.20 | (0.87 to 1.66) |
| Marital status | ||||
| Married | 1.19 | (1.04 to 1.36) | 1.14 | (0.87 to 1.48) |
| Previously married | 1.15 | (0.91 to 1.47) | 1.49 | (1.02 to 2.15) |
| Never married | 1.07 | (0.89 to 1.29) | 1.34 | (0.89 to 2.01) |
| No. of children | ||||
| 0 | 1.21 | (1.00 to 1.47) | 1.17 | (0.76 to 1.80) |
| 1 | 1.24 | (1.00 to 1.55) | 1.25 | (0.83 to 1.87) |
| 2 | 1.17 | (0.98 to 1.40) | 1.13 | (0.80 to 1.60) |
| >2 | 0.99 | (0.81 to 1.22) | 1.45 | (1.04 to 2.03) |
| No. of siblings | ||||
| 1 | 0.99 | (0.77 to 1.26) | 1.20 | (0.76 to 1.90) |
| 2 | 1.25 | (1.03 to 1.51) | 1.32 | (0.91 to 1.92) |
| >2 | 1.16 | (1.01 to 1.33) | 1.23 | (0.95 to 1.60) |
Data are standardized mortality ratios (with 95% CIs) between exposed and unexposed index persons (ie, the ratio of the death rate of persons with a deceased sibling and the death rate of persons with no deceased sibling), adjusted for effects of all control variables.
Control variables included in the estimations are age, calendar year, socioeconomic status, marital status, number of children, number of siblings, and region of residence.
The results are based on 5 different specifications for each sex, where in each model with all main effects we have included also the joint effect of sibling's death and the control variable of interest.