Table 4
Completion of delinquent careers by the age of onset

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Table 4a
Completion of delinquent careers by the age of onset, all offenders
Age of onset 1990 cohort1 1987 cohort1 Both cohorts1
percent completed
5 75.0 ... 75.0
6 75.6 ... 75.6
7 78.3 ... 78.3
8 71.6 72.6 72.1
9 74.0 76.3 75.1
10 73.9 70.2 72.0
11 74.2 70.6 72.5
12 71.6 72.9 72.2
13 0.0 74.1 36.1
14 0.0 75.0 37.7
15 ... 72.7 72.7
16 ... 0.0 0.0
17 ... 0.0 0.0
Total percent 26.4 47.7 40.8
Total number 18,190 38,009 56,199
1. Percentages for the last 2 years of age of onset are 0 by definition.
Data source: Statistics Canada, Canadian Centre for Justice Statistics, Incident-Based Uniform Crime Reporting (UCR2) Survey, Linked 11-year data file.
Table source: Statistics Canada, 2007, The development of police-reported delinquency among Canadian youth born in 1987 and 1990, Catalogue no. 85-561-MWE2007009.


Table 4b
Completion of delinquent careers by the age of onset, offenders with onset before 2004
  1990 cohort1 1987 cohort1 Both cohorts1
percent completed
Percent with completed careers2 73.0 73.5 72.7
Total number with onset before 2004 6,577 24,654 19,793
1. Percentages for the last 2 years of age of onset are 0 by definition.
2. The calculation of the percent with completed careers omits persons born in 1990 with ages of onset of 13 or 14 years and persons born in 1987 with ages of onset of 16 or 17 years.
Data source: Statistics Canada, Canadian Centre for Justice Statistics, Incident-Based Uniform Crime Reporting (UCR2) Survey, Linked 11-year data file.
Table source: Statistics Canada, 2007, The development of police-reported delinquency among Canadian youth born in 1987 and 1990, Catalogue no. 85-561-MWE2007009.


Table 4c
Completion of delinquent careers by the age of onset, linear regression of percent with completed careers on age of onset (offenders with onset before 2004)
  1990 cohort1 1987 cohort1 Both cohorts1
percent completed
Unstandardized b -0.006 0.001 0.0002
T ratio -1.89 0.57 0.15
P(b=0) 0.06 0.57 0.88
1. Percentages for the last 2 years of age of onset are 0 by definition.
Data source: Statistics Canada, Canadian Centre for Justice Statistics, Incident-Based Uniform Crime Reporting (UCR2) Survey, Linked 11-year data file.
Table source: Statistics Canada, 2007, The development of police-reported delinquency among Canadian youth born in 1987 and 1990, Catalogue no. 85-561-MWE2007009.