1School of Population Health,University of Auckland,261 Morrin Road,Auckland,New Zealand.
2Faculty of Medical and Health Sciences,University of Auckland,Auckland,New Zealand.
Public Health Nutr. 2017 Sep;20(13):2269-2276. doi: 10.1017/S1368980017000805. Epub 2017 Jun 19.
Convenience and cost impact on people's meal decisions. Takeaway and pre-prepared foods save preparation time but may contribute to poorer-quality diets. Analysing the impact of time on relative cost differences between meals of varying convenience contributes to understanding the barrier of time to selecting healthy meals.
Six popular New Zealand takeaway meals were identified from two large national surveys and compared with similar, but healthier, home-made and home-assembled meals that met nutrition targets consistent with New Zealand Eating and Activity Guidelines. The cost of each complete meal, cost per kilogram, and confidence intervals of the cost of each meal type were calculated. The time-inclusive cost was calculated by adding waiting or preparation time cost at the minimum wage.
A large urban area in New Zealand.
For five of six popular meals, the mean cost of the home-made and home-assembled meals was cheaper than the takeaway meals. When the cost of time was added, all home-assembled meal options were the cheapest and half of the home-made meals were at least as expensive as the takeaway meals. The home-prepared meals were designed to provide less saturated fat and Na and more vegetables than their takeaway counterparts; however, the home-assembled meals provided more Na than the home-made meals.
Healthier home-made and home-assembled meals were, except one, cheaper options than takeaways. When the cost of time was added, either the home-made or the takeaway meal was the most expensive. This research questions whether takeaways are better value than home-prepared meals.
方便性和成本对人们用餐决策的影响。外卖和预制食品节省了准备时间,但可能导致饮食质量较差。分析时间对不同方便程度的餐食相对成本差异的影响有助于了解选择健康餐食的时间障碍。
从两项大型全国性调查中确定了六种受欢迎的新西兰外卖餐,并将其与符合新西兰饮食和活动指南的营养目标的类似但更健康的自制和自组装餐进行比较。计算了每一餐的总成本、每公斤成本以及每一餐类型成本的置信区间。通过在最低工资基础上加上等待或准备时间成本,计算了包含时间的总成本。
新西兰一个大城市。
对于六种流行餐中的五种,自制和自组装餐的平均成本低于外卖餐。当加上时间成本时,所有自组装餐选项都是最便宜的,有一半的自制餐至少与外卖餐一样昂贵。这些自制餐的设计目的是提供较少的饱和脂肪和钠,以及更多的蔬菜,而它们的外卖餐则相反;然而,自组装餐比自制餐提供了更多的钠。
除了一种情况外,更健康的自制和自组装餐比外卖更便宜。当加上时间成本时,自制餐或外卖餐的成本最高。这项研究质疑外卖是否比自制餐更有价值。