Table 2.
Descriptive statistics for the study population of 2,359,921 individuals born in Sweden 1958–1979 assessed for violent criminal offending.
| N | Offspring convicted of violent crime | Mean no. violent crimes per offspring | Incidence (violent crimes per 1000 person years) | |||
|---|---|---|---|---|---|---|
|
| ||||||
| N | Prevalence (%) | Overall | Violent offenders | |||
|
| ||||||
| All | 2,359,921 | 95,127 | 4.0 | 2.53 | 4.95 | 120.70 |
|
| ||||||
| Paternal age | ||||||
| <20 | 47,581 | 3,972 | 8.4 | 2.98 | 11.32 | 139.25 |
| 20–24 | 477,909 | 26,796 | 5.6 | 2.64 | 7.09 | 126.13 |
| 25–29 | 805,540 | 30,003 | 3.7 | 2.46 | 4.59 | 119.85 |
| 30–34 | 566,923 | 18,433 | 3.3 | 2.42 | 3.89 | 116.42 |
| 35–39 | 278,921 | 9,297 | 3.3 | 2.48 | 3.82 | 113.42 |
| 40–44 | 121,105 | 4,244 | 3.5 | 2.57 | 4.03 | 116.05 |
| 45–49 | 43,894 | 1,582 | 3.6 | 2.48 | 3.97 | 110.69 |
| 50–54 | 13,190 | 537 | 4.1 | 2.25 | 4.15 | 99.90 |
| 55–59 | 3,676 | 182 | 5.0 | 2.88 | 6.64 | 134.63 |
| >59 | 1,182 | 81 | 6.9 | 2.84 | 9.21 | 129.77 |
|
| ||||||
| Maternal age | ||||||
| <20 | 208,269 | 15,650 | 7.5 | 2.83 | 9.84 | 133.57 |
| 20–24 | 746,500 | 35,635 | 4.8 | 2.56 | 5.92 | 123.12 |
| 25–29 | 781,003 | 24,865 | 3.2 | 2.39 | 3.81 | 116.01 |
| 30–34 | 412,974 | 12,309 | 3.0 | 2.41 | 3.50 | 113.92 |
| 35–39 | 166,178 | 5,138 | 3.1 | 2.42 | 3.39 | 108.60 |
| 40–44 | 42,143 | 1,435 | 3.4 | 2.49 | 3.64 | 106.51 |
| > 44 | 2,854 | 95 | 3.3 | 2.26 | 3.17 | 104.70 |
|
| ||||||
| Gender | ||||||
| Male | 1,211,522 | 85,011 | 7.0 | 2.63 | 8.95 | 125.63 |
| Female | 1,148,399 | 10,116 | 0.9 | 1.68 | 0.72 | 79.59 |
|
| ||||||
| SES | ||||||
| Low | 849,063 | 44,444 | 5.2 | 2.55 | 6.29 | 120.81 |
| Medium | 820,186 | 24,131 | 2.9 | 2.33 | 3.30 | 109.39 |
| High | 533,552 | 13,241 | 2.5 | 2.24 | 2.86 | 110.07 |
| Missing | 157,120 | 13,311 | 8.5 | 3.11 | 12.81 | 152.25 |
|
| ||||||
| Parity | ||||||
| Firstborn by mother | 1,031,088 | 39,276 | 3.8 | 2.51 | 4.66 | 121.15 |
| Not firstborn by mother | 1,328,833 | 55,851 | 4.2 | 2.54 | 5.16 | 120.40 |
|
| ||||||
| Father ever convicted of a violent crime | ||||||
| No | 2,269,699 | 83,386 | 3.7 | 2.43 | 4.31 | 113.78 |
| Yes | 90,222 | 11,741 | 13.0 | 3.27 | 22.87 | 177.69 |
|
| ||||||
| Swedish-born father | ||||||
| No | 284,766 | 20,113 | 7.1 | 2.83 | 10.11 | 144.02 |
| Yes | 2,075,155 | 75,014 | 3.6 | 2.45 | 4.27 | 114.95 |
|
| ||||||
| Maternal and/or paternal half sibling | ||||||
| No | 1,908,754 | 62,276 | 3.3 | 2.39 | 3.72 | 110.32 |
| Yes | 451,167 | 32,851 | 7.3 | 2.80 | 10.60 | 142.32 |
|
| ||||||
| Bipolar diagnosis | ||||||
| No | 2,354,628 | 94,465 | 4.0 | 2.52 | 4.91 | 120.54 |
| Yes | 5,293 | 662 | 12.5 | 3.33 | 18.16 | 141.17 |
|
| ||||||
| Schizophrenia diagnosis | ||||||
| No | 2,350,925 | 93,166 | 4.0 | 2.50 | 4.81 | 119.63 |
| Yes | 8,996 | 1,961 | 21.8 | 3.89 | 36.75 | 166.23 |
Note: All covariates plus schizophrenia and bipolar disorder diagnoses were included in cohort analyses.