"CONSTRUCTION AND VALIDATION OF A VIDEO CODING TOOL FOR AN INTERVENTION" by Margaret Doyle Samson

Date of Award

2020

Degree Type

Thesis

Degree Name

Master of Science in Nutrition and Food Science

Department

Nutrition and Food Sciences

First Advisor

Alison Tovar

Abstract

Objective: This study describes the development and initial validation of a video coding tool to assess feeding practices observed in video-recorded family meals in order to provide feedback to caregivers. Methods: The tool with operational definitions was developed based on the previous literature and other tools that capture caregiver feeding practices. To assess face validity, a sample of child feeding experts (n=6) completed an 8-item online survey about content and usability. The tool was modified based on expert feedback and used to code 10 video-recorded family meals. Intraclass correlation coefficients (ICC) were calculated to determine inter-rater and test re-test reliabilities. Results: Using a scale of 0-100, tool usability (81.8 ± 11.7) and content (87.7 ± 14.0) were rated acceptable. ICC was calculated as 0.86, indicating a good inter-rater reliability and ICC for test re-test reliability was 0.95, indicating excellent reliability. Conclusions and Implications: Future studies should focus on the expansion of operational definitions and training efforts to further improve inter-rater and test re-test reliabilities.

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