PT - JOURNAL ARTICLE AU - Gosadi, Ibrahim M. AU - Alatar, Abdullah A. AU - Otayf, Mojahed M. AU - AlJahani, Dhaherah M. AU - Ghabbani, Hisham M. AU - AlRajban, Waleed A. AU - Alrsheed, Abdullah M. AU - Al-Nasser, Khalid A. TI - Development of a Saudi Food Frequency Questionnaire and testing its reliability and validity AID - 10.15537/smj.2017.6.20055 DP - 2017 Jun 01 TA - Saudi Medical Journal PG - 636--641 VI - 38 IP - 6 4099 - http://smj.org.sa/content/38/6/636.short 4100 - http://smj.org.sa/content/38/6/636.full SO - Saudi Med J2017 Jun 01; 38 AB - Objectives: To create a food frequency questionnaire specifically designed to capture the dietary habits of Saudis and test its validity and reliability.Methods: This investigation is a longitudinal, test-retest study conducted in King Saud University, Riyadh, Kingdom of Saudi Arabia between December 2015 and March 2016. A list of 140 food items was included in the questionnaire where a closed-ended and open-ended approach was used. Regarding past year food frequency consumption and 24 hours dietary recall, body weight and height were collected. Internal consistency, test-retest reliability, completeness of the food list, and criterion validity were assessed.Results: One-hundred and thirty eight participants were interviewed to complete the 24 hours dietary recall and the constructed questionnaire. Approximately 85% of the food items reported in the dietary recall were covered in the food frequency questionnaire. The association of body mass index with meats (regression coefficients: 2.28) and dairy products consumption frequency was statistically significant (regression coefficients: 2.31). A high overall reproducibility rate of the questionnaire was detected (Pearsons’ correlation coefficient: 0.78 p<0.001).Conclusion: The developed questionnaire has a high reliability and reasonable validity, and suitable for use in nutritional epidemiological investigations in Saudi Arabia.