| Frequency (%) |
Gender | |
 Male | 270 (33.5%) |
 Female | 536 (66.5%) |
Marital status | |
 Single | 581 (71.6%) |
 Married | 230 (28.4%) |
Education levela | |
 Primary | 24 (3.1%) |
 Complementary | 61 (7.8%) |
 Secondary | 125 (15.9%) |
 University | 574 (73.2%) |
Monthly income | |
 No income | 340 (45.1%) |
< 1000$ | 247 (32.8%) |
 1000 – 2000 $ | 117 (15.5%) |
 > 2000 $ | 50 (6.6%) |
Tobacco use | |
 Yes | 246 (30.8%) |
 No | 554 (69.2%) |
Drug addiction | |
 Yes | 7 (0.9%) |
 No | 751 (99.1%) |
Alcohol users | |
 Yes | 32 (4.2%) |
 No | 724 (95.8%) |
Caffeine | |
 Yes | 721 (90.0%) |
 No | 80 (10.0%) |
Practicing sport activities | Â |
 Yes | 490 (62.4%) |
 No | 295 (37.6%) |
 | Mean ± SD |
Age (in years) | 27.59 ± 11.76 |
Body Mass Index (Kg/m2) | 18.09 ± 11.68 |