| Characteristics | Total (N=391) | No CMD (N=215) | CMD (N=175) |
| Age (in years; mean±SD) | 33±7 | 33±6 | 34±7 |
| Height (in cm; mean±SD) | 180±7 | 181±7 | 180±7 |
| Weight (in kg; mean±SD) | 76±9 | 75±9 | 76±8 |
| Duration refereeing career (in years; mean±SD) | 7±5 | 7±5 | 7±6 |
| Main refereeing function (%) | |||
| Central referee | 45 | 46 | 44 |
| Assistant referee | 55 | 53 | 56 |
| Educational level (%) | |||
| Nursery/elementary school | 2 | 3 | 1 |
| High school | 15 | 12 | 18 |
| Vocational/technical school | 9 | 8 | 12 |
| College, university (equivalent) | 74 | 77 | 70 |
| Employed aside refereeing (%) | 92 | 95 | 90 |
| Working hours per week (mean±SD) | 36±8 | 37±8 | 36±8 |
| Symptoms of CMD % | |||
| Distress | 5.9 | ||
| Anxiety/depression | 11.8 | ||
| Sleeping disturbance | 9.1 | ||
| Eating disorders | 19.2 | ||
| Adverse alcohol use | 16.5 | ||
| Comorbidity of simultaneous symptoms of CMD % | |||
| Two symptoms | 7.7 | ||
| Three symptoms | 2.0 | ||
| Four symptoms | 1.0 | ||
| Severe injuries (%) | |||
| None | 82 | 82 | 82 |
| 1 or 2 | 18 | 17 | 17 |
| Three or more | 1 | 1 | 1 |
| Surgeries (%) | |||
| None | 96 | 97 | 96 |
| 1 or 2 | 4 | 3 | 4 |
| Three or more | 0 | 0 | 1 |
| Recent life events (%) | |||
| None | 50 | 49 | 45 |
| 1 or 2 | 42 | 42 | 47 |
| Three or more | 8 | 9 | 8 |
| Social support score (mean±SD) | 11±4 | 10±4 | 12±5 |
CMD, common mental disorder.