Statistical analyses
Dietary data were inspected for outliers and extreme values. Health habit information was either categorised or used as a continuous variable. Specifically, smoking status was categorised into current or non-smokers based on smoking activity in the past 12 months. Vigorous physical activity was defined as an activity that exerts force and greatly increases respiration or heart rates, such as lifting or carrying heavy objects, building, plowing, running, playing basketball, for at least 10 min continuously. Moderate physical activity was defined as an activity that slightly increases respiration or heart rates, such as carrying small objects, fast-walking, cycling, swimming, golfing, for at least 10 min continuously. These definitions were clearly written in the questionnaires, and the obtained data was converted to hour/week. Alcohol consumption and screen time responses were numerical and based on the past 12 months and the past 30 d, respectively.Descriptive statistics (means, 