Background and aim: Schizophrenia is a disabling condition which affects independent functioning in instrumental activities of daily living (IALDs). Due to their importance in mental health and rehabilitation planning, this study was designed to compare functional capacity and daily life performance in IADLs in patients with schizophrenia with healthy matched individuals. The relations between capacity and performance are also considered.
Materials and methods:  Thirty community dwelling patients with chronic schizophrenia and thirty healthy matched individuals were selected. After obtaining a written consent, IADLs were assessed using the Performance Assessment of Self-care Skills (PASS) and the Lawton's index of instrumental activities of daily living. Data analysis was done by SPSS, version 14.0.
Results: Comparing two groups, patients with schizophrenia scored significantly lower in independency, process, and quality in PASS, and in total score of Lawton's index (P<0.001 for all variables). No significant correlations were found between two measures.
Conclusion: It seems that functional capacity and performance in IADLs are limited in patients suffering from schizophrenia. Functional capacity was not related to daily life performance. However, further studies are needed to investigate factors affects functional outcome.