| BMI | body mass index |
| COVID-19 | coronavirus disease-2019 |
| S-COVID-19-S | suspected coronavirus disease-2019 symptoms |
| SD | standard deviation |
| HL | health literacy |
| HLS-SF12 | a 12-item short-form health literacy survey questionnaire |
| DDL | digital healthy diet literacy |
| OR | odds ratio |
| CI | confidence interval |
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