Pre-Trial Detention Under the Young Offenders Act: A Study of Urban Courts

APPENDIX: METHOD AND SUPPORTING TABLES (cont'd)

TABLE A.4 - THE EFFECTS OF SOCIAL AND LEGAL VARIABLES ON POLICE DETENTION AT ARREST, WINNIPEG
Variable Module 1 Module 2
B (s.e.) Sign. B (s.e.) Sign.
Constant 1.777 (1.284) .166 2.152 (1.689) .194
Being female .326 (.292) .264 .312 (.320) .329
Age at offence -.053 (.083) .522 .009 (.091) .917
White/other vs. Aboriginal/black -.692 (.255) .007 -.386 (.278) .166
Lives with parents/1 or 2 parents not known vs. other -.659 (.260) .011 -.804 (.292) .004
No outstanding charges vs. 1 or more outstanding charge     -.471 (.291) .105
Both bail history and prior custody (no/yes)     -.721 (.181) .000
Number of current charges     -.214 (.107) .045
Indictable person or other administration of justice current charge (no/yes)     -.607 (.350) .082
Model chi-square (df) 18.14 (4) ** 59.75 (8) ***
Block chi-square (df) 18.14 (4) ** 40.94 (5) ***
% correct predictions detained 74% 67%
% correct predictions released 55% 70%
Overall correct predictions 64% 68%
Nagelkerke's R2 .08 .25

TABLE A.5 - THE EFFECTS OF SOCIAL AND LEGAL VARIABLES ON POLICE DETENTION AT ARREST, EDMONTON
Variable Module 1 Module 2
B (s.e.) Sign. B (s.e.) Sign.
Constant 3.640 (1.310) .005 5.858 (1.601) .001
Being female -.311 (.249) .211 -.508 (.316) .097
Age at offence -.197 (.084) .019 -.195 (.100) .052
No current involvement vs. some legal involvement     -1.033 (.289) .001
Number of current charges     -.429 (.144) .003
Auto theft (no/yes)     .261 (.498) .600
No indictable vs. 1+ indictable charge     -2.083 (.338) .000
FTC/FTA charge at arrest (no/yes)     -2.443 (.389) .000
Model chi-square (df) 6.23 (2) * 137.43 (7) ***
Block chi-square (df) 6.23 (2) * 130.80 (5) ***
% correct predictions detained 5% 59%
% correct predictions released 96% 87%
Overall correct predictions 62% 77%
Nagelkerke's R2 .02 .41

TABLE A.6 - THE EFFECTS OF SOCIAL AND LEGAL VARIABLES ON POLICE DETENTION AT ARREST, VANCOUVER
Variable Module 1 Module 2
B (s.e.) Sign. B (s.e.) Sign.
Constant -4.125 (2.628) .117 -4.831 (2.790) .083
Being female -.447 (.601) .457 -.592 (.670) .384
Age at offence .181 (.166) .274 .366 (.184) .047
White/other vs. Aboriginal/black -1.100 (.657) .095 -1.330 (.724) .067
No current involvement vs. some legal involvement     -.416 (.514) .419
Hybrid property vs. other charges at arrest     -2.400 (.554) .000
Auto theft (no/yes)     -2.443 (1.125) .030
Model chi-square (df) 6.53 (3) 28.52 (7)***
Block chi-square (df) 6.53 (3) 22.01 (4)***
% correct predictions detained 100% 96%
% correct predictions released 0% 38%
Overall correct predictions 83% 86%
Nagelkerke's R2 .07 .33

TABLE A.7 - THE EFFECTS OF SOCIAL AND LEGAL VARIABLES ON POLICE DETENTION AT ARREST, SURREY
Variable Module 1 Module 2
B (s.e.) Sign. B (s.e.) Sign.
Constant .428 (2.007) .831 1.206 (2.280) .597
Being female -.126 (.452) .870 -435 (.496) .380
Age at offence .021 (.130) .870 .068 (.148) .648
Living with family vs. other -7.05 (.435) .105 -.687 (.472) .146
Currently on probation (no/yes)     -.897 (.390) .021
Hybrid property vs. other charges at arrest     -.974 (.432) .024
Number of current charges     -.171 (.192) .374
Auto theft (no/yes)     -.653 (.583) .262
Model chi-square (df) 3.03 (3) 17.92 (7) *
Block chi-square (df) 3.03 (3) 14.89 (4) **
% correct predictions detained 14% 33%
% correct predictions released 95% 95%
Overall correct predictions 65% 73%
Nagelkerke's R2 .03 .16

Notes:

  • *** p<.001, ** p<.01, * p<.05. If the cell is blank, then the factor was not statistically associated with the condition. "-" means that the variable was not included in the model. "n.a." means the variable was excluded because of missing values.
  • The first value in the cell is the unstandardized B coefficient.
  • N=142, Cut value = .50
  • Dependent variable = police detention (detained vs. released)

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