A new tool to capture dimensions of family dinners in relation to adolescent health and risk-related outcomes: The 'Family Dinner Index'.

There is a strong association between family meals and child and adolescent health. To systematically understand the associations between family meals with a variety of health and risk outcomes, we developed and conducted a validation study of child- and parent-versions of the Family Dinner Index (FDI; FDI-C/FDI-P). We validated the measures with a national sample of 2,090 parent-child dyads. Using factor analysis, we reduced the initial FDIs each to eight items representing communication, enjoyment, and digital distractions; the FDI-C also included meal logistics and the FDI-P, family bonding. Using multivariable log-binomial regression models, we examined the relationships between FDI scores and substance use, violence, weight perception, weight control intention, and health indicators. Children who scored ≥21 on the FDI-C had a significantly lower average prevalence of a 'negative outcome' composite, as well as a lower prevalence of each of the individual behaviors. Children of parents who scored ≥24 on the FDI-P had a significantly lower average prevalence of the 'negative outcome' composite, as well as a lower prevalence of substance use indicators, negative weight perception and intentions to lose weight, less than daily fruit and vegetable consumption, and not meeting guidelines for physical activity. The FDI measures provide support for face and content validity, as well as concurrent criterion validity and construct validity. Further validation with these measures using a longitudinal design will allow for the establishment of predictive validity. Currently, the FDI measures may help researchers and practitioners identify points of emphasis for tailoring family-based prevention programs accordingly.