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Introduction: Fear of progression (FOP) is a significant psychological concern among cancer patients. The Fear of Progression Questionnaire-Short Form (FOPQ-SF) is one of the significant and reliable tools to evaluate FOP. This study aims to validate the psychometric features of the Persian version of FOPQ-SF in Iranian cancer patients., Methods: The translation of the FOPQ-SF was developed using a "forward-backward" approach. This cross-sectional study included 120 cancer patients who completed the questionnaires. The validity and reliability of the FOPQ-SF were evaluated, and the factor structure was examined using both exploratory factor analysis (EFA) and confirmatory factor analysis (CFA)., Results: The FOPQ-SF demonstrated high test-retest and internal reliability, with a Cronbach's alpha coefficient of 0.84. EFA revealed a one-factor structure consisting of 12 items. The FOPQ-SF exhibited high convergent validity, as indicated by significant correlations with anxiety, depression, the total score of HADS, and symptoms. It also demonstrated moderate divergent validity, with negative correlations observed between function and global health. Furthermore, FOP significantly differed among pre-defined groups based on cancer stages., Discussion: The results indicate that the Persian version of the FOPQ-SF is a reliable and valid questionnaire for assessing FOP in 20-60 Iranian cancer patients ages., (© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)

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