Scores from the Scales for the Assessment of Positive and Negative Symptoms (SAPS & SANS) from 125 COS patients were assessed for fit with previously established symptom dimensions from AOS literature using confirmatory factor analysis (CFA).
We interviewed a sample of 428 people with schizophrenia spectrum disorders and increased waist circumference enrolled in the CHANGE trial using a Food Frequency Questionnaire (FFQ) and a 24h recall interview, a Physical Activity Scale (PAS), scale for assessment of positive and negative symptoms (SAPS and SANS, respectively), Brief Assessment of Cognition in Schizophrenia (BACS) and Global Assessment of Functioning (GAF).
We assessed stereoacuity using the Titmus Stereopsis Test and clinical symptoms using Chinese versions of the Scales for the Assessment of Positive and Negative Symptoms (SAPS and SANS).
Clinical diagnosis and psychopathological symptom severity were assessed by using the Structured Clinical Interview for DSM-IV-TR (SCID-P) and the Scales for Assessment of Positive and Negative Symptoms (SAPS and SANS).
Diagnostic characteristics were determined using the Spanish version of the Present State Examination (PSE-9), and the Scales for the Assessment of Positive and Negative Symptoms (SAPS and SANS, respectively).