Exploring the potential of a wearable camera to examine the early obesogenic home environment
Date Submitted: Mar 25, 2017
Open Peer Review Period: Mar 25, 2017 - May 20, 2017
Background: The ‘obesogenic’ home environment is usually examined via self-report, and objective measures are required. Objective: This study explored whether the wearable camera ‘SenseCam’ can be used to examine the early obesogenic home environment, and whether it is useful for validation of self-report measures. Methods: Fifteen primary caregivers of young children (mean age of child 4 years) completed the Home Environment Interview (HEI). Seven to 19 days after the HEI, participants wore the SenseCam at home for 4 days. A semi-structured interview assessed participants’ experience of wearing the SenseCam. Intraclass correlation coefficients (ICCs), percent agreement, and kappa statistics were used as validity estimates for 54 home environment features. Results: Wearing the SenseCam was generally acceptable to participants. The SenseCam captured all 54 HEI features, but with varying detail. Thirty-six features (67%) had satisfactory validity (ICC or kappa ≥ 0.40; percent agreement 80 where kappa could not be calculated). Validity was good or excellent (ICC or kappa ≥ 0.60) for fresh fruit and vegetable availability, fresh vegetable variety, the display of food/drink (except sweet snacks), family meals, child eating lunch/dinner while watching TV, garden/play equipment, the number of TVs/DVD players, and media equipment in the child’s bedroom. Validity was poor for tinned and frozen vegetable availability/variety, and sweet snack availability. Conclusions: The SenseCam has the potential to objectively examine and validate multiple aspects of the obesogenic home environment. Further research should aim to replicate the findings in a larger, representative sample.