Aintree University Hospital NHS Foundation Trust

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Explanatory Note

Funnel plots display trust risk-adjusted outcomes for 90-day mortality, 30-day unplanned readmission, 2-year mortality and, for rectal cancer patients, 18-month stoma rate. The funnel regions represent the 95 per cent limit and the 99.8 per cent limit for trusts compared to the national average. Those trusts with results outside the outer (99.8 per cent) limit are considered potential outliers.

Risk adjustment is performed using the seven items listed under Data Quality as well as mode of admission (elective/emergency) and number of co-morbidities according to HES, and an interaction between age and distant metastases. Missing values are imputed using Multiple Imputation. The model for two-year mortality additionally includes interactions between follow-up time (0-3 months after surgery vs. 3-24 months after surgery) and all of the risk factors.

A stoma is considered to be reversed if a HES record with relevant code is identified with 18 months of the initial surgical procedure.

Trust Number Adjusted Observed
Aintree University Hospital NHS Foundation Trust 89 8.8% 9%
Other trusts within the region: Cheshire and Merseyside
Countess of Chester Hospital NHS Foundation Trust 108 16.4% 14.8%
East Cheshire NHS Trust 75 13.6% 13.3%
Mid Cheshire Hospitals NHS Foundation Trust 81 3.9% 3.7%
St Helens and Knowsley Hospitals NHS Trust 132 11.7% 12.1%
Warrington and Halton Hospitals NHS Foundation Trust 70 12.4% 12.9%
Wirral University Teaching Hospital NHS Foundation Trust 100 3.2% 3%
Trust Number Adjusted Observed
Aintree University Hospital NHS Foundation Trust 94 2.2% 2.1%
Other trusts within the region: Cheshire and Merseyside
Countess of Chester Hospital NHS Foundation Trust 112 2.7% 1.8%
East Cheshire NHS Trust 75 3.5% 4%
Mid Cheshire Hospitals NHS Foundation Trust 85 1.9% 1.2%
St Helens and Knowsley Hospitals NHS Trust 142 3.9% 4.9%
Wirral University Teaching Hospital NHS Foundation Trust 109 2.1% 1.8%
Trust Number Adjusted Observed
Aintree University Hospital NHS Foundation Trust 115 43.4% 30.9%
Other trusts within the region: Cheshire and Merseyside
Countess of Chester Hospital NHS Foundation Trust 97 14.9% 12%
East Cheshire NHS Trust 57 19.3% 24.3%
Mid Cheshire Hospitals NHS Foundation Trust 98 17.3% 12.2%
Southport and Ormskirk Hospital NHS Trust 84 22.6% 24.1%
St Helens and Knowsley Hospitals NHS Trust 163 18.6% 23.5%
Warrington and Halton Hospitals NHS Foundation Trust 54 20% 30.6%
Wirral University Teaching Hospital NHS Foundation Trust 115 22% 22.5%