Mean case mix of patients presenting during the night shift
| Middle-grade night (95% CI) | Consultant night (95% CI) | |
| Male (%) | 55.0 (53.8 to 56.2) | 55.1 (51.4 to 58.7) |
| Under 16 years of age (%) | 16.8 (15.6 to 17.9) | 18.5 (15.9 to 21.1) |
| Over 65 years of age (%) | 16.8 (15.7 to 17.9) | 14.5 (12.7 to 16.3) |
| Ambulance arrivals age 16–65 years (%) | 28.7 (27.2 to 30.2) | 29.1 (26.5 to 31.8) |
| Non-ambulance arrivals age 16–65 years (%) | 37.7 (36.4 to 39.1) | 37.9 (34.5 to 41.2) |
| Ambulance arrivals age over 65 years (%) | 14.3 (13.3 to 15.3) | 12.0 (10.0 to 13.9) |
| Non-ambulance arrivals age over 65 years (%) | 2.5 (2.1 to 2.9) | 2.5 (1.6 to 3.5) |