Prevalence and patterns of cooking dinner at home in the USA: National Health and Nutrition Examination Survey (NHANES) 2007-2008

Objective To measure the prevalence of cooking dinner at home in the USA and test whether home dinner preparation habits are associated with socio-economic status, race/ethnicity, country of birth and family structure. Design Cross-sectional analysis. The primary outcome, self-reported frequency of cooking dinner at home, was divided into three categories: 0-1 dinners cooked per week ('never'), 2-5 ('sometimes') and 6-7 ('always'). We used bivariable and multivariable regression analyses to test for associations between frequency of cooking dinner at home and factors of interest. Setting The 2007-2008 National Health and Nutrition Examination Survey (NHANES). Subjects The sample consisted of 10 149 participants. Results Americans reported cooking an average of five dinners per week; 8 % never, 43 % sometimes and 49 % always cooked dinner at home. Lower household wealth and educational attainment were associated with a higher likelihood of either always or never cooking dinner at home, whereas wealthier, more educated households were more likely to sometimes cook dinner at home (P < 0 center dot 05). Black households cooked the fewest dinners at home (mean = 4 center dot 4, 95 % CI 4 center dot 2, 4 center dot 6). Households with foreign-born reference persons cooked more dinners at home (mean = 5 center dot 8, 95 % CI 5 center dot 7, 6 center dot 0) than households with US-born reference persons (mean = 4 center dot 9, 95 % CI 4 center dot 7, 5 center dot 1). Households with dependants cooked more dinners at home (mean = 5 center dot 2, 95 % CI 5 center dot 1, 5 center dot 4) than households without dependants (mean = 4 center dot 6, 95 % CI 4 center dot 3, 5 center dot 0). Conclusions Home dinner preparation habits varied substantially with socio-economic status and race/ethnicity, associations that likely will have implications for designing and appropriately tailoring interventions to improve home food preparation practices and promote healthy eating.