Approximately half of the participants self-identified as men, and half self-identified as women. 73.3% of the participants self-identified as non-Hispanic white adults, 11% self-identified as Hispanic adults, 8% self-identified as non-Hispanic Black adults and 6.9% of adults self-identified as another racial category, including mixed-race adults and adults of other non-Hispanic races. The study’s limitations included its reliance on self-reported dietary information, which may be affected by participant’s memory or recall and may not accurately assess typical eating patterns. Factors that may also play a role in health, outside of daily duration of eating and cause of death, were not included in the analysis.
大约一半的参与者自认为是男性，一半的参与者自认为是女性。 73.3% 的参与者自认为是非西班牙裔白人成年人，11% 的参与者自认为是西班牙裔成年人，8% 的参与者自认为是非西班牙裔黑人成年人，6.9% 的成年人自认为是其他种族类别，包括混血儿 - 种族成年人和其他非西班牙裔种族的成年人。 该研究的局限性包括它依赖于自我报告的饮食信息，这可能会受到参与者记忆或回忆的影响，并且可能无法准确评估典型的饮食模式。 除了每日进食时间和死亡原因之外，其他可能对健康产生影响的因素也没有纳入分析中。
这种参与者自我报告方式的文章可信度存疑，再者主要以白人为研究对象，华裔参考性不高。
