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Tuesday, November 3, 2009: 1:35 PM
Learning Objective 1: Upon completion of this presentation the session participant will be able to discuss different types of dietary intake measurement.
Learning Objective 2: Following attendance a session participant will be able to articulate the added benefit of adding photographs to written diet diary information of young children.
Background: Obtaining valid, reliable dietary intake data for young children is challenging.
Objective: To assess validity, reliability, and acceptability of the addition of photography to traditional written diet diaries for recording young children’s dietary intake.
Methods: 22 parents of preschoolers enrolled to complete a 2-day photographic diet diary for their child. Diaries were coded by a trained nursing student for food weight, calories and macronutrients. A random sample of diaries was evaluated by an independent nutritionist to determine interrater reliability. Convergent validity was tested by comparing visual estimates and actual values of photos of 24 researcher-created meals/snacks. Acceptability was assessed through participants’ feedback, completion rates for the project, project costs, and quality of the data obtained.
Statistical analyses: Reliability was assessed by computing intra-class correlations between caloric and macronutrient data from two independent diary evaluators. Convergent validity was assessed by calculating intra-class correlations between visually-estimated photo diary evaluations and actual pre-measured researcher-created meals/snacks.
Results: Medium to large correlations between the two independent evaluators (.51-.63) were found for caloric and macronutrient values, with the exception of protein (r = -.21). Strong correlations (food served, r = .69-.96; food consumed, r = .66-.83) were obtained between visual estimates and actual values of calories and macronutrients for the pre-measured foods. Preliminary results indicate the addition of photographs to a traditional diet diary may enhance the validity and reliability of prospective dietary intake recording. Parents and children indicated the activity was fun and quality data resulted indicating that this method is acceptable.
Objective: To assess validity, reliability, and acceptability of the addition of photography to traditional written diet diaries for recording young children’s dietary intake.
Methods: 22 parents of preschoolers enrolled to complete a 2-day photographic diet diary for their child. Diaries were coded by a trained nursing student for food weight, calories and macronutrients. A random sample of diaries was evaluated by an independent nutritionist to determine interrater reliability. Convergent validity was tested by comparing visual estimates and actual values of photos of 24 researcher-created meals/snacks. Acceptability was assessed through participants’ feedback, completion rates for the project, project costs, and quality of the data obtained.
Statistical analyses: Reliability was assessed by computing intra-class correlations between caloric and macronutrient data from two independent diary evaluators. Convergent validity was assessed by calculating intra-class correlations between visually-estimated photo diary evaluations and actual pre-measured researcher-created meals/snacks.
Results: Medium to large correlations between the two independent evaluators (.51-.63) were found for caloric and macronutrient values, with the exception of protein (r = -.21). Strong correlations (food served, r = .69-.96; food consumed, r = .66-.83) were obtained between visual estimates and actual values of calories and macronutrients for the pre-measured foods. Preliminary results indicate the addition of photographs to a traditional diet diary may enhance the validity and reliability of prospective dietary intake recording. Parents and children indicated the activity was fun and quality data resulted indicating that this method is acceptable.