Variable Day-case (n = 35,494) Overnight stay (n = 13,729)
Mean age in years (standard deviation) 49.7 (14.845) 52.6 (15.475)
Number of males (%), 3 missing values 20959 (59.1%) 8137 (59.3%)
Hospital Frailty Risk Score
None 33327 (93.9%) 12313 (89.7%)
Mild 1842 (5.2%) 1082 (7.9%)
Moderate 309 (0.9%) 310 (2.3%)
Severe 16 (0.1%) 24 (0.2%)
Number of patients undergoing complex ESS 7482 (21.1%) 3189 (23.2%)
Emergency hospital readmission within 30 days of discharge 723 (2%) 428 (3.1%)
Return for ESS within 180 days of discharge 229 (0.6%) 85 (0.6%)
Death within one year of discharge 81 (0.2%) 63 (0.5%)
Any complications recorded during index stay 344 (1.0%) 836 (6.1%)
Haemorrhage recorded during index stay 164 (0.5%) 588 (4.3%)
Orbital injury recorded during index stay 97 (0.3%) 87 (0.6%)
Cerebrospinal fluid leak recorded during index stay 2 (0.01%) 18 (0.1%)
Meningitis recorded during index stay 0 0
Any complications recorded on emergency readmission within 30 days of discharge 425 (1.2%) 222 (1.6%)
Haemorrhage recorded on emergency readmission within 30 days of discharge 305 (0.9%) 153 (1.1%)
Orbital injury recorded on emergency readmission within 30 days of discharge 30 (0.1%) 11 (0.1%)
Cerebrospinal fluid leak recorded on emergency readmission within 30 days of discharge 1 (0.003%) 5 (0.04%)
Meningitis recorded on emergency readmission within 30 days of discharge 3 (0.01%) 3 (0.02%)