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?05). Black households cooked the fewest dinners at home (mean 5 4?4, 95 % CI 4?2, 4?6). Households with foreign-born reference persons cooked more dinners at home (mean 5 5?8, 95 % CI 5?7, 6?0) than households with US-born reference persons (mean 5 4?9, 95 % CI 4?7, 5?1). Households with dependants cooked more dinners at home (mean 5 5?2, 95 % CI 5?1, 5?4) than households without dependants (mean 5 4?6, 95 % CI 4?3, 5?0). Conclusions: Home dinner preparation habits varied substantially with socioeconomic 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.