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Psychometric Properties of the Turkish CardioToxicity Management Self-Efficacy Scale for Nurses.

OBJECTIVES: This study was conducted to evaluate the validity and reliability of the CardioToxicity Management Self-Efficacy Scale (NSS-CTC) in Turkey.

METHOD: This methodological and descriptive study was undertaken with 204 oncology nurses. Information was gathered using a descriptive questionnaire and the NSS-CTC instrument. In the validity analysis of the scale, explanatory factor analysis and confirmatory factor analysis were used. In the reliability analysis, Cronbach α coefficient and Pearson correlation analysis were used to examine item-total score correlations, and Student t-test was used for test-retest analysis.

RESULTS: The scale, characterized by a two-dimensional structure confirmed through factor analysis, exhibited an explained variance rate of 60.44%. The factor loadings exceeded the threshold of 0.30, and all fitness indices surpassed the criterion of 0.90. Furthermore, the root-mean-square error of approximation (RMSEA) fell below 0.080 and demonstrated statistical significance. The scale demonstrated strong internal consistency, as indicated by the overall Cronbach α coefficient of 0.930, with its subdimensions exhibiting similarly high reliability, reflected in Cronbach α values of 0.871 and 0.912, respectively.

CONCLUSION: The NSS-CTS is a valid and reliable tool specifically developed for evaluating nurses' self-efficacy in the context of oncology wards, particularly in managing cardiotoxicity resulting from cancer treatments.

IMPLICATIONS FOR NURSING PRACTICE: This newly developed scale holds significant promise in gauging nurses' confidence levels when confronted with the intricacies of cardiotoxicity management. It responds to the growing imperative for nurses to continually enhance their knowledge and skills to effectively address the evolving challenges associated with cardiotoxicity in cancer care.

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