Table 1: Sociodemographic and lifestyle characteristics of all participants and of users of nutritional supplements. No missing data.

Percentage of total population () Percentage of supplement users () P Gender  Male 60.9 72.0 <0.001  Female 39.1 28.0 Age group (years)  20–30 63.7 64.0 0.936  30–40 26.6 26.9  40–50 9.8 9.1 Education  Brevet 10.2 9.1 0.615  Lebanese Bachelor 13.7 10.8  Technical degree 5.5 6.5  Bachelor 56.8 59.1  Masters or above 12.3 12.4  Others 1.6 2.2 Alcohol intake  No 65.6 60.8 0.080  Yes 34.4 39.2 Smoking status  No 61.7 59.1 0.500  Current 31.3 34.4  Former 7.0 6.5 Disease history  No 92.8 90.3 0.106  Yes 7.2 9.7 Total time of exercise  <1 month 3.9 1.6 0.005  1–6 months 11.5 10.2  7 months–1 year 9.2 4.8  >1 year 75.4 83.3 Frequency of exercise  <3 times/week 16.8 14.0 0.099  3–5 times/week 64.1 62.4  >5 times/week 19.1 23.7 Total time of daily exercise  <1 hour/day 18.0 16.7 0.673  1-2 hours/day 68.6 71.0  >2 hours/day 13.5 12.4