Related Experiment Video
Updated: May 11, 2026

Qualitative and Quantitative Validation of Tools with Rating Scales Aimed at Assessing the Quality of University Service-Learning
Published on: August 29, 2025
The Duke University Religion Index (DUREL): validation and reliability of the Farsi version
Sina Hafizi1, Amir Hossein Memari, Mohammad Pakrah
1Tehran University of Medical Sciences, Tehran, Iran. Sina.Hafizi@gmail.com
Abstract:
This study examined the validation and reliability of the Farsi version of the Duke University Religion Index (FDUREL), a brief measure designed to evaluate the primary dimensions of religiosity. The study was conducted in two phases. In the first phase, after translation of the original version of DUREL by using standard forward-backward translation, the FDUREL was administered to 427 medical students at different training levels. Reliability of the FDUREL was assessed by internal consistency and test-retest reliability. Principal components factor analysis was employed to assess the construct validity of the measure. In the second phase, 557 medical students were asked to fill out the FDUREL and Hoge Intrinsic Religiosity Scale to examine concurrent validity. The FDUREL was unidimensional and had good internal consistency and test-retest reliability. Results suggest that the FDUREL is a reliable and valid measure of religiosity in Farsi-speaking populations.
Related Concept Videos
Reliability and Validity
Identifying Statistically Significant Differences: The F-Test
Interpretation of Confidence Intervals
Confidence intervals have confidence coefficients that are crucial for their interpretation. The most common confidence coefficients are 0.90, 0.95, and 0.99, which can be written as percentages–90%, 95%, and 99%, respectively.
Suppose a person calculates a confidence interval with a confidence coefficient of 0.95. In that case, they can...
Assessing Blood pressure using a doppler ultrasound
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
Confidence Coefficient
Goodness-of-Fit Test
