Table 5.
Are male adult-onset offenders convicted of different types of crimes compared to male juvenile-onset offenders? Comparison between juvenile- and adult-onset men on types of non-status offense crime
| Panel A: Convictions between ages 14 and 40 years as a function of age at first conviction. | |||||
|---|---|---|---|---|---|
| Conviction type | Age-of-first-conviction group | Adult-onset vs juvenile-onset risk ratio (95% CI) |
|||
| Juvenile-onset | Adult-onset | ||||
| % | Rate Per person1 |
% | Rate Per person2 |
||
| Property & fraud crimes | 41.2% | 5.31 | 42.7% | 1.80 | 1.03 (0.89–1.17) |
| Driving under the influence & criminal driving violations |
21.4% | 2.76 | 31.2% | 1.32 | 1.46 (1.20–1.72) |
| Violent & weapon crimes | 13.8% | 1.78 | 7.5% | 0.32 | 0.54 (0.35–0.82) |
| Drug-related crimes | 9.6% | 1.24 | 3.9% | 0.17 | 0.41 (0.23–0.73) |
| Criminal justice system violations | 9.3% | 1.19 | 7.5% | 0.32 | 0.81 (0.52–1.22) |
| Crimes against women | 2.3% | 0.30 | 2.9% | 0.12 | 1.24 (0.58–2.45) |
| Odd crimes | 2.4% | 0.31 | 4.3% | 0.18 | 1.81 (0.96–3.14) |
| Total | 100% | 12.90 | 100% | 4.23 | |
| Panel B: Conviction period held constant across groups. Convictions between ages 20 and 40 years as a function of age at first conviction. | |||||
|---|---|---|---|---|---|
| Conviction type | Age-of-first-conviction group | Adult-onset vs juvenile-onset risk ratio (95% CI) |
|||
| Juvenile-onset | Adult-onset | ||||
| % | Rate Per person3 |
% | Rate Per person2 |
||
| Property & fraud crimes | 32.5% | 3.56 | 42.7% | 1.80 | 1.31 (1.11–1.55) |
| Driving under the influence & criminal driving violations |
18.5% | 2.02 | 31.2% | 1.32 | 1.69 (1.36–2.11) |
| Violent & weapon crimes | 16.3% | 1.79 | 7.5% | 0.32 | 0.46 (0.30–0.71) |
| Drug-related crimes | 13.6% | 1.49 | 3.9% | 0.17 | 0.29 (0.16–0.53) |
| Criminal justice system violations | 12.3% | 1.35 | 7.5% | 0.32 | 0.61 (0.39–0.95) |
| Crimes against women | 3.9% | 0.42 | 2.9% | 0.12 | 0.74 (0.35–1.58) |
| Odd crimes | 2.9% | 0.32 | 4.3% | 0.18 | 1.48 (0.76–2.89) |
| Total | 100% | 10.96 | 100% | 4.23 | |
Notes:
-Number of observations: 124 men and 1599 convictions. Of the 138 juvenile-onset men, 14 (10%) were only ever convicted of a status offense.
-Number of observations: 66 men and 279 convictions.
-Number of observations: 85 men and 932 convictions. Of the 138 juvenile-onset men, 85 (62%) had a criminal convictions at age 20 or later.
CI-confidence interval.
Bold indicates a statistically significant different risk of conviction.
94 of the person-years (2% of the 3800 person-years in Panel A, 3% of the 3020 person-years in Panel B) were spent incarcerated.
Incarceration time did not substantively alter the results presented above and we subsequently report the more parsimonious rate of offending by person, rather than by person-year.