Design and Evaluation of a Training Protocol for a Photographic Method of Visual Estimation of Fruit and Vegetable Intake among Kindergarten Through Second-Grade Students

作者：Masis Natalie; McCaffrey Jennifer; Johnson Susan L; Chapman Novakofski Karen

来源：Journal of Nutrition Education and Behavior, 2017, 49(4): 346-351.

DOI：10.1016/j.jneb.2017.01.004

• food intake
• digital photography
• reliability
• fruits and vegetables
• school nutrition
• dietary assessment

Objective: To design a replicable training protocol for visual estimation of fruit and vegetable (FV) intake of kindergarten through second-grade students through digital photography of lunch trays that results in reliable data for FV served and consumed.
Methods: Protocol development through literature and researcher input was followed by 3 laboratory-based trainings of 3 trainees. Lunchroom data collection sessions were done at 2 elementary schools for kindergarten through second-graders. Intraclass correlation coefficients (ICCs) were used.
Results: By training 3, ICC was substantial for amount of FV served and consumed (0.86 and 0.95, respectively; P <.05). The ICC was moderate for percentage of fruits consumed (0.67; P =.06). In-school estimates for ICCs were all significant for amounts served at school 1 and percentage of FV consumed at both schools.
Conclusions and Implications: The protocol resulted in reliable estimation of combined FV served and consumed using digital photography. The ability to estimate FV intake accurately will benefit intervention development and evaluation.

• 出版日期2017-4