Psychometric Properties of the Persian Version of the Sibling Cancer Needs Instrument (SCNI)

Abstract

The sibling cancer needs instrument (SCNI) is the first developed specifically for assessing psychosocial unmet<br />needs of adolescents having a sibling with cancer. The aim of this study is to evaluate the psychometric properties of its<br />Persian version. Methods: For this methodological study, the SCNI was translated into Persian using back-translation<br />and revised according to the comments of the developer of the instrument. Then face validity, content validity, construct<br />validity, internal consistency and the stability of the Persian version of the instrument were measure, by examining<br />a population of 180 adolescents having a sibling with cancer in six hospitals in Tehran, Iran. The data were analyzed<br />using SPSS version 16 and EQS version 6.1. Results: Confirmatory factor analysis approved the construct validity of<br />the instrument and its seven domains. Cronbach's alpha was measured as 0.97 for the total instrument and 0.80- 0.92<br />for its seven domains. In order to evaluate ttest-retest reliability, the intra-class correlation coefficient (ICC) was also<br />calculated (0.94). Conclusions: The Persian version of SCNI has acceptable psychometric properties. It can be used<br />for measuring the unmet psychosocial needs in adolescents who have a sibling with cancer in the Persian-speaking<br />population.