Characteristics of footballer and control populations
| Footballers, n=572 | Controls, n=500 | P value | |
| Age (years), mean (SD) | 60.11 (10.77) | 64.26 (9.37) | <0.001 |
| BMI (kg/m2), mean (SD) | 27.13 (3.40) | 27.29 (4.48) | 0.51 |
| HADS Anxiety Score >11, n (%) | 70 (12.01) | 50 (10.29) | 0.34 |
| HADS Depression Score >11, n (%) | 33 (5.66) | 28 (5.76) | 0.94 |
| SF Physical Component Score, mean (SD) | 45.33 (10.32) | 77.60 (8.35) | <0.001 |
| SF Mental Component Score, mean (SD) | 48.09 (7.47) | 71.87 (6.64) | <0.001 |
| Optimal sleep (7–8 hours per night), n (%) | 369 (64.51) | 275 (56.70) | 0.01 |
| Sleep Problem Index (SIP) in highest tertile, n (%) | 186 (33.04) | 131 (26.90) | 0.03 |
| Positive mood, mean (SD) | 34.75 (8.05) | 34.97 (6.86) | 0.63 |
| Negative mood, mean (SD) | 16.5 (6.72) | 14.22 (4.95) | <0.001 |
| Indices of Multiple Deprivation in the lowest and highest quintile, n (%) | 17 (3.51) | 84 (17.28) | <0.001 |
| 205 (42.27) | 199 (40.95) | 0.18 |
BMI, body mass index; HADS, Hospital Anxiety and Depression Scale; SF, Short Form.