Prevalence of family meals ≥7 times/week by household food availability: U.S. multi-person households, NHANES 2007–10.

Aggregate healthy food availability score constructed as sum of 4 binary variables indicating frequent availability of fruits and dark green vegetables and infrequent availability of salty snacks and sugar-sweetened beverages. A score of 4 indicates that the household always or most of the time had fruits and dark green vegetables available, and rarely or never had salty snacks or sugar- sweetened beverages available. Error bars are 95% confidence intervals (CI). Sample sizes at each level of food availability score (low to high) are 789; 2564; 9975; 3760; 943. Percentages are weighted and 95% CI account for the complex sample design.综合健康食品可得性得分由4个二元变量求和构建而成，这四个变量分别用于标识水果与深绿色蔬菜的高频可得性，以及咸味零食、含糖饮料的低频可得性。当得分为4时，代表该家庭始终或绝大多数时间均可获取水果与深绿色蔬菜，且极少或从未有咸味零食或含糖饮料可供获取。误差棒为95%置信区间（CI）。健康食品可得性得分从低到高各层级的样本量依次为789、2564、9975、3760、943。所有百分比均已完成加权处理，且95%置信区间的计算考虑了复杂抽样设计。