Table 5.

Non-acquisitive crime subcategories: offending rate, rate ratio and age-adjusted rate ratio, by drug test result and gender.

		Men, n = 107,573				Women, n = 32,352
Offence category	Statistic	%	Rate	RR	aRR	%	Rate	RR	aRR
Other summary offences	Dually negative	23.6	0.327	Ref.	Ref.	7.3	0.075	Ref.	Ref.
Cocaine-only	23.0	0.304	0.93 [0.91, 0.95]	0.95 [0.93, 0.98]	11.8	0.119	1.58 [1.45, 1.71]	1.54 [1.42, 1.68]
Opiate-only	23.9	0.363	1.11 [1.08, 1.14]	1.24 [1.20, 1.28]	13.4	0.137	1.81 [1.65, 1.98]	1.84 [1.68, 2.01]
Opiate and cocaine	24.0	0.356	1.09 [1.06, 1.11]	1.23 [1.20, 1.26]	13.8	0.162	2.15 [2.01, 2.29]	2.13 [1.99, 2.28]
Breach	Dually negative	20.8	0.260	Ref.	Ref.	8.2	0.103	Ref.	Ref.
Cocaine-only	21.1	0.249	0.96 [0.93, 0.98]	0.99 [0.97, 1.02]	20.6	0.275	2.67 [2.52, 2.83]	2.56 [2.42, 2.72]
Opiate-only	36.2	0.503	1.94 [1.89, 1.99]	2.22 [2.16, 2.28]	33.5	0.501	4.86 [4.61, 5.12]	4.85 [4.60, 5.11]
Opiate and cocaine	38.4	0.522	2.01 [1.96, 2.05]	2.33 [2.28, 2.38]	43.6	0.675	6.54 [6.29, 6.81]	6.32 [6.07, 6.59]
Violence against the person	Dually negative	16.7	0.127	Ref.	Ref.	7.1	0.055	Ref.	Ref.
Cocaine-only	15.4	0.115	0.90 [0.87, 0.93]	0.94 [0.91, 0.97]	10.0	0.074	1.35 [1.21, 1.50]	1.38 [1.24, 1.53]
Opiate-only	14.7	0.111	0.87 [0.83, 0.92]	1.01 [0.96, 1.07]	12.1	0.094	1.72 [1.54, 1.91]	1.92 [1.72, 2.14]
Opiate and cocaine	14.3	0.105	0.83 [0.79, 0.87]	0.98 [0.93, 1.02]	10.9	0.076	1.39 [1.27, 1.52]	1.54 [1.40, 1.69]
Criminal damage	Dually negative	10.8	0.082	Ref.	Ref.	3.2	0.023	Ref.	Ref.
Cocaine-only	9.0	0.062	0.76 [0.73, 0.80]	0.83 [0.79, 0.87]	3.6	0.023	0.99 [0.82, 1.20]	1.03 [0.85, 1.24]
Opiate-only	7.6	0.053	0.65 [0.60, 0.70]	0.87 [0.80, 0.94]	4.0	0.025	1.09 [0.89, 1.34]	1.24 [1.01, 1.53]
Opiate and cocaine	6.8	0.046	0.56 [0.52, 0.59]	0.76 [0.71, 0.81]	3.2	0.020	0.86 [0.72, 1.02]	0.98 [0.82, 1.17]
Other indictable offences	Dually negative	5.6	0.051	Ref.	Ref.	1.6	0.012	Ref.	Ref.
Cocaine-only	5.3	0.045	0.88 [0.83, 0.93]	1.00 [0.94, 1.06]	2.4	0.027	2.21 [1.84, 2.66]	2.20 [1.83, 2.65]
Opiate-only	5.8	0.053	1.04 [0.96, 1.12]	1.42 [1.32, 1.54]	2.8	0.022	1.83 [1.46, 2.30]	1.90 [1.51, 2.39]
Opiate and cocaine	5.7	0.051	1.00 [0.94, 1.07]	1.40 [1.31, 1.49]	3.9	0.052	4.34 [3.81, 4.94]	4.47 [3.91, 5.12]
Sexual	Dually negative	0.9	0.008	Ref.	Ref.
Cocaine-only	0.6	0.005	0.62 [0.52, 0.73]	0.62 [0.53, 0.73]
Opiate-only	0.5	0.004	0.47 [0.35, 0.62]	0.44 [0.33, 0.59]
Opiate and cocaine	0.4	0.005	0.56 [0.46, 0.69]	0.52 [0.43, 0.65]

% = percentage with crime over follow-up; rate = rate of offending per person year; RR = rate ratio; aRR = rate ratio adjusted for age (counts of offences and age-covariate estimates available in Appendix C).