Tehran University of Medical Sciences Journal of Nutritional Sciences and Dietetics 3 3 2017 01 28 26 30 EN Mostafa Najafipour Young Researchers and Elite Club, Ardabil Branch, Islamic Azad University, Ardabil, Iran. AND Faculty of Medicine, Azad Ardabil University of Medical Sciences, Ardabil, Iran. Majid Bani Mohammad Young Researchers and Elite Club, Ardabil Branch, Islamic Azad University, Ardabil, Iran. AND Faculty of Medicine, Azad Ardabil University of Medical Sciences, Ardabil, Iran. Farzad Najafipour Endocrine Research center, Tabriz University of Medical sciences, Tabriz, Iran. Zohreh Razaghi Endocrine Research center, Tabriz University of Medical sciences, Tabriz, Iran. Amir Mehdizadeh Endocrine Research center, Tabriz University of Medical sciences, Tabriz, Iran. Neda Roshanravan Cardiovascular research center, Tabriz University of Medical sciences, Tabriz, Iran. AND Nutrition research center, Tabriz University of Medical sciences, Tabriz, Iran 2017 08 23 2017 12 23 Development of instruments to measure habitual dietary intake in large epidemiological studies has been investigated extensively. The purpose of this study was to develop a computer-assisted personal interview system (CAPI) system for conducting dietaryassessment. A 168-item food frequency questionnaire (FFQ), originally developed for the Tehran Lipid and Glucose Study, is used widely in food and nutrition studies in Iran. In addition to measurement errors at data recording and entry levels, the printed form is time-consuming and costly, both financially and environmentally. This technical reportintroduces a computer-assisted personal interviewing (CAPI) program to collect food and nutrition data using the Iranian 168-item FFQ. The U.S. Census Bureau’s CSPro software was used to construct the CAPI application. The application runs on Android devices andcomputers with Microsoft Windows operating systems. The language of the CAPI is  Farsi. This easy-to-use CAPI tool attempts to reduce time, cost, and human error in nationwide and local nutrition research. https://jnsd.tums.ac.ir/index.php/jnsd/article/view/180 https://jnsd.tums.ac.ir/index.php/jnsd/article/download/180/211