Main characteristics of the study sample
| Sociodemographic characteristics | Total | Males | Females |
| Participants (n) | 409 | 158 | 251 |
| Sex (%) | – | 38.6 | 61.4 |
| Age (years) | 28.2±3.0 | 28.6±3.3 | 28.0±2.7 |
| Outpatient residency | 210 (51.3) | 78 (49.3) | 132 (52.6) |
| Night shifts (≥1/ month) | 179 (45.6) | 79 (52.3) | 100 (41.5) |
| Chronic diseases | 64 (15.6) | 19 (12.0) | 45 (17.9) |
| Obesity* | 11 (2.7) | 2 (1.3 %) | 9 (3.6 %) |
| Couple | 280 (69.3) | 102 (64.6) | 178 (70.9) |
| Less than a year in a couple | 38 (13.6) | 16 (15.7) | 22 (12.4) |
| Married couples | 47 (16.8) | 14 (13.7) | 33 (18.5) |
| Common-law couples | 27 (9.6) | 12 (11.8) | 15 (8.4) |
| Couples with children (≥1) | 32 (11.4) | 15 (14.7) | 17 (9.6) |
| Current pregnancy (n (%)) | – | – | 16 (6.4) |
| Self-reported sexual behaviour | |||
| Virgin | 33 (8.1) | 12 (7.6) | 21 (8.4) |
| Age at first sexual intercourse (years) | 18.3±2.9 | 18.1±2.8 | 18.4±3.0 |
| Self-reported homosexuality | 8 (3.4) | 5 (3.2) | 3 (1.2) |
| Self-reported bisexuality | 7 (1.7) | 1 (0.6) | 6 (2.4) |
| Self-reported sexual attraction for women only | 141 (34.5) | 139 (88.0) | 2 (0.8) |
| Self-reported sexual attraction for men only | 195 (47.7) | 4 (2.5) | 191 (76.1) |
| Masturbation (sometimes to often) | 228 (55.7) | 120 (75.9) | 108 (43.0) |
| More than one partner in the last year | 52 (12.7) | 26 (16.4) | 26 (10.4) |
| Use of dating apps | 114 (27.9) | 58 (36.7) | 56 (22.3) |
| Alcohol use before the last intercourse | 24 (11.7) | 10 (13.3) | 14 (10.8) |
| Cannabis or drug use before the last intercourse | 5 (2.3) | 3 (3.75) | 2 (14.4) |
| Global health and well-being during residency | |||
| Feeling depressed | 192 (47.9) | 70 (45.2) | 122 (49.6) |
| Received treatment for depression | 27 (6.6) | 7 (10.4) | 20 (16.5) |
| Occasional or frequent migraines | 144 (44.9) | 52 (32.9) | 128 (52.0) |
| Routine gynaecology attendance for check-up (<2 years) | – | – | 173 (68.9) |
| Pap test screening within 2 years | – | – | 126 (50.2) |
| HIV screening during residency | 197 (48.2) | 53 (33.5) | 144 (57.3) |
| Emergency contraception (women or partners of male students) | 56 (13.7) | 12 (7.6) | 44 (17.5) |
| Self-reported abortion during residency | 8 (2.0) | 2 (1.3) | 6 (2.4) |
Results are expressed as mean±SD or n (%) unless otherwise indicated.
*Defined as body mass index (BMI) ≥30 kg/m².