ABSTRACT
Patient safety is one of the most important components of health care quality. Given that assessing the current culture of patient safety is the first step in improving patient safety, we decided to translate and validate one of the most used patient safety culture assessment tool [HSOPS questionnaire] for the first time in Iran, and in this way take a step toward improving patient safety in our hospitals. This cross sectional study was done among four general hospitals of Tehran University of Medical Sciences [TUMS], which were selected purposefully. Questionnaires randomly distributed among 420 members of the study population, and were collected after completion. were analyzed using Confirmatory Factor Analysis [CFA], internal Consistency and correlation. The value of Fitness function [FF] was 14.25 and according to that, the value of Goodness of Fit Index [GFI] was 0.96. Almost in all of the dimensions, the internal consistency of items in the translated Persian questionnaire was lower than the original one and ranged between 0.57 to 0.8. Regarding to the findings of this study the Persian translation of the HSOPS questionnaire is a valid tool for the assessment of patient safety culture in Iran's hospitals