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Baseline dietary habits
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Salt intake: “Before COVID-19, What about your dietary intake of salt?”
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Intake frequency of fresh vegetables: “Before COVID-19, how often did you normally eat fresh vegetables?”
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Intake frequency of fresh fruits: “Before COVID-19, how often did you normally eat fresh fruits?”
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Intake frequency of meat, eggs, milk, or dairy products: “Before COVID-19, how often did you normally eat meat, eggs, milk, or dairy products?”
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Intake frequency of fried foods: “Before COVID-19, how often did you normally eat fried foods?”
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Intake frequency of sugary foods: “Before COVID-19, how often did you normally eat sugar or sugary foods (including sugary drinks, desserts, biscuits, sweets, fruit products, dairy desserts, etc.)?”
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Intake frequency of pickled vegetables: “Before COVID-19, how often did you normally eat pickled vegetables?”
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Intake frequency of processed meat: “Before COVID-19, how often did you normally eat processed meat?”
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Baseline behavioral habits
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Smoking cigarettes per day: “Before COVID-19, how many cigarettes did you normally smoke per day?”
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Frequency of alcohol consumption: “Before COVID-19, how often did you normally drink alcohol?”
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Sleep duration (including lunch break): “Before COVID-19, how long often did you sleep (including lunch break)?”
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Physical exercise time per week: “Before COVID-19, how long often did your physical exercise per week?”
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Willingness to change dietary habits
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Salt: “Do you plan or are you changing salt intake after experiencing the outbreak of COVID-19?”
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Fresh vegetables: “Do you plan or are you changing the intake frequency of fresh vegetables after experiencing the outbreak of COVID-19?”
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Fresh fruits: “Do you plan or are you changing the intake frequency of fresh fruits after experiencing the outbreak of COVID-19?”
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Meat, eggs, milk, or dairy products: “Do you plan or are you changing the intake frequency of meat, eggs, milk, or dairy products after experiencing the outbreak of COVID-19?”
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Fried foods: “Do you plan or are you changing the intake frequency of fried foods after experiencing the outbreak of COVID-19?”
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Sugary foods: “Do you plan or are you changing the intake frequency of sugary foods after experiencing the outbreak of COVID-19?”
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Pickled vegetables: “Do you plan or are you changing the intake frequency of pickled vegetables after experiencing the outbreak of COVID-19?”
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Processed meat: “Do you plan or are you changing the intake frequency of processed meat after experiencing the outbreak of COVID-19?”
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Willingness to change behavioral habits
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Smoking: “Do you plan or are you changing the number of smoking cigarettes per day after experiencing the outbreak of COVID-19?”
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Alcohol consumption: “Do you plan or are you changing the frequency of alcohol consumption after experiencing the outbreak of COVID-19?”
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Sleep: “Do you plan or are you changing sleep duration after experiencing the outbreak of COVID-19?”
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Physical exercise: “Do you plan or are you changing physical exercise time after experiencing the outbreak of COVID-19?”
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