Data are presented as the median (interquartile range) for continuous variables as they had skewed distribution and frequency for categorical variables. Between-group comparisons were conducted with the Mann-Whitney test and Chi-squared test, respectively. In the comparisons, the moderate and high perceived stress groups were compared to the group with low perceived stress. Low stress: 1st quartile of the perceived stress scale; moderate stress: 2nd and 3rd quartiles of the perceived stress scale; high stress: 4th quartile of the perceived stress scale; BMI: body mass index. ; .