📊 CVI Calculation (R-S-C CVI)

📈 Result

Question Relevance (R-CVI) Simplicity (S-CVI) Clarity (C-CVI) CVI Evaluation
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📚 About CVI

The CVI is used to evaluate how well the items in a tool or questionnaire represent the construct they are intended to measure. By gathering expert ratings on the relevance of each item, the CVI provides a numerical measure of agreement, ensuring that the tool has strong content coverage and is conceptually sound. A higher CVI means stronger consensus that the items are appropriate and accurately reflect the intended domain. Beyond being a statistical indicator, the CVI plays a crucial role in refining tools before they are used in practice or research. It helps developers identify weak or irrelevant items that may reduce the accuracy of measurement, while retaining items that add value. This process increases the reliability of the instrument and enhances its acceptance among both experts and end-users.

📚 Related references

Books

  • Creswell, J. W., & Creswell, J. D. (2022). Research design: Qualitative, quantitative, and mixed methods approaches (6th ed.). SAGE Publications.

  • Polit, D. F., & Yang, F. (2016). Measurement and the measurement of change : a primer for the health professions. Wolters Kluwer.

  • Waltz, C. F., Strickland, O., & Lenz, E. R. (2010). Measurement in nursing and health research. Springer Publishing Company.

Journal papers

  • Abbaszadeh, R., Ahmadi, F., Khoobi, M., Kazemnejad, A., & Vaismoradi, M. (2025). Development and Psychometric Evaluation of Iranian Critical Care Nurses’ Fatigue Scale. Journal of Nursing Measurement, 0(0), JNM-2024-0137.R1. https://doi.org/10.1891/jnm-2024-0137

  • Ansariniaki, M., Lamyian, M., Ahmadi, F., Rahimi Foroushani, A., Curry, C. L., & Barkin, J. L. (2021). Persian version of the Barkin Index of Maternal Functioning (BIMF): a cross-cultural adaptation and psychometric evaluation. BMC Pregnancy and Childbirth, 21(1). https://doi.org/10.1186/s12884-021-03556-4

  • Ayre, C., & Scally, A. J. (2014). Critical Values for Lawshe’s Content Validity Ratio. Measurement and Evaluation in Counseling and Development, 47(1), 79–86. https://doi.org/10.1177/0748175613513808

  • Saei, M., Giti Ozgoli, Ahmadi, F., Majd, H. A., Aflatounian, A., & Tehrani, F. R. (2023). Adolescents’ polycystic ovary syndrome health-related quality of life questionnaire (APQ-20): development and psychometric properties. European Journal of Pediatrics, 182(5), 2393–2407. https://doi.org/10.1007/s00431-023-04875-8

  • Safaralinezhad, A., Lamyian, M., Ahmadi, F., Hosseinkhani, Z., & Montazeri, A. (2025). Development and Psychometric Properties of the Mental Health Literacy Scale for Women of Reproductive Age: A Mixed Method Study. Health Science Reports, 8(9). https://doi.org/10.1002/hsr2.71227

  • Shamsikhani, S., Ahmadi, F., Kazemnejad, A., & Vaismoradi, M. (2023). Design and psychometric properties of the family support for older people questionnaire. Frontiers in Public Health, 11. https://doi.org/10.3389/fpubh.2023.1068839