Table 1.
Characteristics of the study sample.
| Qualitative Variables | Frequency (n) | Percentage (%) | |
| Gender | Female | 250 | 86.5 |
| Male | 39 | 13.5 | |
| Nationality | Spanish | 276 | 95.5 |
| Other | 13 | 4.5 | |
| Marital status | Single | 276 | 95.5 |
| Married | 13 | 4.5 | |
| Children | No | 288 | 99.7 |
| Yes | 1 | 0.3 | |
| Cohabitation | Family | 198 | 69.5 |
| Friends | 67 | 23.2 | |
| Couple | 15 | 5.2 | |
| Other | 9 | 3.1 | |
| Chronic diseases | No | 238 | 82.4 |
| Yes | 51 | 17.6 | |
| BMI (kg/m2) | Underweight | 30 | 10.4 |
| Normal weight | 214 | 74.0 | |
| Overweight | 30 | 10.4 | |
| Obese | 11 | 3.8 | |
| Stimulating drinks daily (coffee, cola, tea) | No | 110 | 39.1 |
| Yes | 179 | 61.9 | |
| Tobacco | No | 266 | 92 |
| Yes | 23 | 8 | |
| Alcohol | No | 121 | 41.9 |
| Yes | 168 | 58.1 | |
| Psychoactive substances | No | 285 | 98.6 |
| Yes | 4 | 1.4 | |
| Psychotropic drugs daily | No | 276 | 95.5 |
| Yes | 13 | 4.5 | |
| Quantitative variable | Mean (±SD) | Range | |
| Age (years) | 20.60 (±2.56) | 17–30 | |
| Self-perceived health (0–10) | 7.69 (±1.29) | 1–10 | |