Diagnoses and dropout among patients of danish psychiatrists in private practice.

Objective: This study examined diagnoses of patients treated by psychiatrists in private practice in Denmark and identified predictors of dropout.
Methods: Between 1996 and 2006, a total of 37 psychiatrists contributed data about treatment episodes to a quality assurance database. The diagnostic distribution was determined, and univariate and backward stepwise regression analysis was used to identify dropout predictors.
Results: Among 41,462 episodes (35,205 patients), 39%-41% were for an ICD-10 diagnosis of affective disorders, 30%-35% for nervous and stress-related disorders, and 10% for personality disorders. For episodes involving these diagnoses, 26,443 were terminated; 26.2% ended in dropout, which was predicted by the patient's being male, younger age (< or =44 years), presence of personality disorder, shorter treatment duration (< or =111 days), use of psychotropic medication, and a larger population per psychiatrist in the catchment area.
Conclusions: Attention should be given to younger male patients treated for personality disorders, because they are at higher risk of treatment dropout.