ویژگی‌های روانسنجی نسخه فارسی ابزار سوگ مزمن کندال در مادران کودکان مبتلا به سرطان

Objectives: The aim of this study was to investigate psychometric characteristics of Persian version of Kendall Chronic Sorrow Instrument (KCSI) among a population of Iranian mothers of children with cancer. Method: The KCSI was translated using Wilde et al. method and its content and face validity were determined by 15 faculty members in different fields in nursing and psychology. Then, using convenience sampling method, 246 mothers of children with cancer referring to Medical Center for Children (Markaz-e-Tebbi-e-Koodakan), Mofid and Ali Asghar hospitals were selected and they filled out the Persian version of KCSI. Construct validity were assessed by exploratory factor analysis. For internal consistency Cronbach’s alpha coefficient and for reliability test-retest method was used for 20 participants within a two-week interval. Results: The factor analysis confirmed three factors explaining 49.9% of variance of total scores. The Cronbach's alpha for the whole instrument was 0.84 and Pearson's correlation coefficient within two times implementation was 0.86 (p<0.001). The participants’ KCSI mean score was 74.6 (SD=15.8). Conclusion:  The KCSI could be used as a valid and reliable instrument for measuring chronic sorrow in mothers of children with cancer