Reliability of Repeated Measures of Nutrient Intake by Diet Records in Residents in the Western Region of Japan

We aimed to assess the day-to-day variation in twelve one-day diet records over one year from 131 residents of urban and rural areas in the western region of Japan.Between 2014 and 2015, the participants provided repeated one-day diet records once a month. We estimated the intraclass correlation coefficient (ICCs) for intakes for energy and 39 crude and energy-adjusted nutrients using linear mixed models.Among the unadjusted nutrients, ICCs...