School of Nutrition and Health Sciences, Taipei Medical University, Taipei 110-31, Taiwan.
Faculty of Public Health, Hai Phong University of Medicine and Pharmacy, Hai Phong 042-12, Vietnam.
Int J Environ Res Public Health. 2020 Sep 30;17(19):7185. doi: 10.3390/ijerph17197185.
Assessing healthy diet literacy and eating behaviors is critical for identifying appropriate public health responses to the COVID-19 pandemic. We examined the psychometric properties of digital healthy diet literacy (DDL) and its association with eating behavior changes during the COVID-19 pandemic among nursing and medical students. We conducted a cross-sectional study from 7 April to 31 May 2020 at 10 public universities in Vietnam, in which 7616 undergraduate students aged 19-27 completed an online survey to assess socio-demographics, clinical parameters, health literacy (HL), DDL, and health-related behaviors. Four items of the DDL scale loaded on one component explained 71.32%, 67.12%, and 72.47% of the scale variances for the overall sample, nursing, and medical students, respectively. The DDL scale was found to have satisfactory item-scale convergent validity and criterion validity, high internal consistency reliability, and no floor or ceiling effect. Of all, 42.8% of students reported healthier eating behavior during the pandemic. A 10-index score increment of DDL was associated with 18%, 23%, and 17% increased likelihood of healthier eating behavior during the pandemic for the overall sample (OR, 1.18; 95%CI, 1.13, 1.24; < 0.001), nursing students (OR, 1.23; 95%CI, 1.10, 1.35; < 0.001), and medical students (OR, 1.17; 95%CI, 1.11, 1.24; < 0.001), respectively. The DDL scale is a valid and reliable tool for the quick assessment of digital healthy diet literacy. Students with higher DDL scores had a higher likelihood of healthier eating behavior during the pandemic.
评估健康饮食素养和饮食习惯对于确定应对 COVID-19 大流行的适当公共卫生措施至关重要。我们研究了数字健康饮食素养（DDL）的心理测量特性及其与护理和医学生在 COVID-19 大流行期间饮食行为变化的关系。我们于 2020 年 4 月 7 日至 5 月 31 日在越南的 10 所公立大学进行了一项横断面研究，共有 7616 名 19-27 岁的本科生完成了一项在线调查，以评估社会人口统计学、临床参数、健康素养（HL）、DDL 和与健康相关的行为。DDL 量表的四个项目在一个分量表上加载，解释了整个样本、护理学生和医学生的量表方差的 71.32%、67.12%和 72.47%。DDL 量表具有令人满意的项目-量表收敛效度和标准效度、高内部一致性信度，且无地板或天花板效应。其中，42.8%的学生报告在疫情期间饮食更健康。DDL 增加 10 个指数得分与整体样本（OR，1.18；95%CI，1.13，1.24；<0.001）、护理学生（OR，1.23；95%CI，1.10，1.35；<0.001）和医学生（OR，1.17；95%CI，1.11，1.24；<0.001）在疫情期间更健康饮食行为的可能性分别增加 18%、23%和 17%。DDL 量表是快速评估数字健康饮食素养的有效可靠工具。DDL 得分较高的学生在疫情期间更有可能饮食更健康。
