Table 2.

Comparisons of Administrative Data and Self-reported Data

	Administrative Data	Self-reported Data	Agreement
	% or Mean (SD)	% or Mean (SD)	%
Department of Mental Health Data*
Ever in psychiatric treatment, %	24.0	38.8	72.1
Mean number of times	7.8 (40.5)	2.3 (8.6)
Ever in inpatient treatment, %	5.1	22.2	81.4
Mean number of times	0.1 (0.8)	0.8 (3.8)
Ever in outpatient treatment, %	23.9	30.3	72.7
Mean number of times	7.7 (40.1)	1.5 (7.2)
Treated in hospital in past 6 months, %	2.5	5.4	95.9
Mean number of days	0.4 (5.8)	0.5 (5.7)
Treated in hospital in past 30 days, %	1.3	2.7	97.7
Mean number of days	0.1 (1.4)	0.2 (1.4)
Department of Justice Data
Ever arrested, %	75.7	82.6	79.0
Mean number of arrest	10.7 (15.0)	5.7 (10.3)
Arrested in past 6 months, %	40.7	37.1	81.5
Mean number of arrest	0.90 (1.8)	0.49 (1.9)
Arrested in past 30 days, %	8.2	8.4	92.2
Mean number of arrest	0.13 (0.6)	0.09 (0.6)

^*Note that administrative data on mental health services only covered a 3.5 year time-period, thus restricting the observation period for analysis of events that “ever” occurred.