Table 1.
Baseline characteristics of the study participants.
| Population characteristics | All participants | |
|---|---|---|
| n | % | |
| Total number of participants | 3190 | |
| Age mean (SD) | 19.0 | 1.2 |
| Sex | ||
| Women | 808 | 25.3 |
| Men | 2382 | 74.7 |
| Nationality | ||
| Foreign | 42 | 1.3 |
| Japanese | 3148 | 98.7 |
| Faculty | ||
| Arts | 1220 | 38.2 |
| Science | 1334 | 41.8 |
| Medicine | 636 | 19.9 |
| Admission year | ||
| 2017 | 1978 | 62.0 |
| 2016 | 810 | 25.4 |
| 2015 | 199 | 6.2 |
| Before 2014 | 203 | 6.4 |
| BMI | ||
| <18.5 | 520 | 16.3 |
| 18.5–24.9 | 2373 | 74.4 |
| ≥25 | 249 | 7.8 |
| SRH | ||
| Poor | 91 | 2.9 |
| Fair | 3099 | 97.1 |
| Skipping breakfast | ||
| Yes | 769 | 24.1 |
| No | 2421 | 75.9 |
| Lack of exercise | ||
| Yes | 985 | 30.9 |
| No | 2205 | 69.1 |
| Satisfaction with sleep | ||
| Poor | 560 | 17.6 |
| Fair | 2630 | 82.4 |
| Smoking | ||
| Yes | 19 | 0.6 |
| No | 3171 | 99.4 |
| Alcohol drinking | ||
| Yes | 575 | 18.0 |
| No | 2615 | 82.0 |
Abbreviations: BMI, body mass index; SD, standard deviation; SRH, self‐rated health.