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Treatment intensity in child and adolescent mental health services and health care reform in Norway, 1998-2006.

OBJECTIVE
The aim of this study was to assess trends in treatment intensity in outpatient child and adolescent mental health services (CAMHS) in Norway from 1998 to 2006. During this period, Norway experienced substantial growth in available CAMHS resources. In 2002 hospital ownership was recentralized and health enterprises were established.


METHODS
A nonexperimental, interrupted time-series design was used to estimate trends adjusted for patient case mix and CAMHS size. From a panel of 37 CAMHS units, two subsamples were extracted. These patients (N=94,173) were aged 0-17 years and had participated in at least one treatment session with a therapist (direct consultation) during the year of observation. Direct and indirect consultations (appointments with cooperating services) were separately analyzed with multilevel regression analyses.


RESULTS
Patient-level factors were the main sources of variation in number of consultations. CAMHS unit size was positively associated with direct consultations in both subsamples. A trend of increased direct consultations was observed in one subsample. Comparing the period 2002-2006 with 1998-2001 revealed a positive shift in treatment intensity for both consultation types in both subsamples. Trends and shifts differed between patient groups according to the main reason for referral and gender.


CONCLUSIONS
The main health policy objective during the study period was increased access to mental health treatment. Both access and treatment intensity increased. The study was inconclusive about whether incentives related to CAMHS performance measurement caused treatment intensity to increase, specifically after the 2002 hospital ownership reform.