Psychometric Properties and Diagnostic Associations of the Short-Form Community Assessment of Psychic Experiences in a Population-Based Sample of 29 021 Adult Men.

BACKGROUND AND HYPOTHESIS: Around 5%-7% of the adult population are estimated to have lifetime psychotic experiences (PEs), which are associated with psychosis risk. PEs assessed with Community Assessment of Psychic Experiences (CAPE) are associated with psychosis but also non-psychotic disorders, which could be partly explained by CAPE indirectly capturing emotional symptoms. We investigated the psychometric properties of a shorter version, CAPE-9, and whether CAPE-9 scores are associated with lifetime psychotic or non-psychotic mental disorders after controlling for current anxiety and depressive symptoms. DESIGN: CAPE-9 questionnaire data were obtained from 29 021 men (42.4 ± 5.6 yrs.) from the Norwegian Mother, Father, and Child Cohort Study. We investigated CAPE-9 reliability and factor structure. Logistic regression was used to test effects of current anxiety and depressive symptoms (SCL-12) on associations between CAPE-9 scores and psychiatric diagnoses. RESULTS: CAPE-9 fit a previously reported 3-factor structure and showed good reliability. Twenty-six percent reported at least one lifetime PE. CAPE-9 scores were significantly associated with most psychiatric disorders (schizophrenia, depression, bipolar disorder, substance abuse, anxiety, trauma-related disorders, and ADHD). After controlling for concurrent emotional symptoms, only associations with schizophrenia (OR = 1.29; 95% CI = 1.18-1.38) and trauma-related disorders (OR = 1.09; CI = 1.02-1.15) remained significant. CONCLUSIONS: CAPE-9 showed good psychometric properties in this large population-based adult male sample, and PEs were more clearly associated with psychotic disorders after controlling for current emotional symptoms. These results support the use of the short CAPE-9 as a cost-effective tool for informing public health initiatives and advancing our understanding of the dimensionality of psychosis.

International classification of diseases/disorders diagnosis and International Classification of Functioning, Disability and Health activity/participation limitation among psychiatric patients: a cross-sectional and exploratory study.

To explore the relationships between international classification of diseases/disorders (ICD)-10 diagnoses and International Classification of Functioning, Disability and Health (ICF) disability dimensions - activity and participation restriction among mental health service users. Three hundred sixty patients from different health services diagnosed with diverse mental disorders (ICD-10) participated in the study. Functioning restrictions were evaluated by use of the Mini-ICF-APP. Selected sociodemographic and clinical variables were also analysed. The Mini-ICF-APP scores correlated positively with the clinical impression of disease severity and negatively with general functioning. As independent factors determining the Mini-ICF-APP score, regression analysis suggests diagnosis and severity of disorder but also contextual factors such as general functioning and active occupation. Percentage and percentile distributions of activity and participation restrictions in diagnostic sections and categories revealed noticeable variability regardless of diagnosis-related differences. The diagnosis determines them neither in an ambiguous nor an absolute manner. There is a need to further explore the covariability between clinical diagnosis and ICF activity and participation restriction, particularly in regard the rationalization of social welfare benefits.