Concurrent validity of the Health of the Nation Outcome Scales compared with a patient-derived measure, the Symptom Checklist-90-Revised in out-patient clinics.

The psychometric properties of the Health of the Nation Outcome Scales (HoNOS) have been questioned. The present study examined the concurrent validity of the HoNOS against a patient-derived measure (the Symptom Checklist-90-R (SCL-90-R)) in out-patients. This relationship has previously only been investigated in in-patients.