Turkish adaptation of the fear of cancer scale: validity, measurement invariance and reliability study

The aim of this study was to evaluate the Turkish cultural and psychometric properties of the cancer fear scale developed by Feng et al. This methodological study was conducted between January and April 2024 with students from a university in eastern Turkey. Data were collected from two different sample groups (sample 1:350, sample 2:245). Personal information form and cancer fear scale were used. In the adaptation process of the scale, language validity, content validity, construct validity, and reliability were examined. Exploratory factor analysis, confirmatory factor analysis, measurement invariance and convergent-divergent validity were used to determine construct validity. Cronbach alpha internal consistency coefficient, test-retest and corrected item-total correlation were used for reliability. According to the results of exploratory factor analysis, it was determined that the fear of cancer scale had a two-factor structure with factor loadings between 0.58 and 0.70. As a result of the confirmatory factor analysis performed on the two-factor structure of the fear of cancer scale, it was determined that the model goodness-of-fit indices were acceptable and had an excellent fit. It has been determined that measurement invariance findings across genders support configural, metric and scalar invariance. The Cronbach alpha internal consistency coefficient of the fear of cancer scale was 0.93, and the corrected item total correlation values were between 0.45 and 0.73. The Turkish version of the fear of cancer scale was found to be a valid and reliable measurement tool.