Bolton 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
Bolton NHS Foundation Trust 99 11.2% 11.1%
Other trusts within the region: Greater Manchester
University Hospital of South Manchester NHS Foundation Trust 86 16.1% 16.3%
Pennine Acute Hospitals NHS Trust 179 12.8% 12.9%
Salford Royal NHS Foundation Trust 69 8.2% 8.7%
Stockport NHS Foundation Trust 103 16.6% 15.5%
Tameside Hospital NHS Foundation Trust 68 12.1% 11.8%
The Christie NHS Foundation Trust 35 7.9% 8.6%
Wrightington, Wigan and Leigh NHS Foundation Trust 94 15.3% 13.8%
Trust Number Adjusted Observed
Bolton NHS Foundation Trust 101 1% 1%
Other trusts within the region: Greater Manchester
University Hospital of South Manchester NHS Foundation Trust 87 0.9% 1.2%
Pennine Acute Hospitals NHS Trust 184 4.6% 3.8%
Stockport NHS Foundation Trust 107 1.7% 1.9%
Tameside Hospital NHS Foundation Trust 74 4.1% 6.8%
Wrightington, Wigan and Leigh NHS Foundation Trust 97 6.2% 4.1%
Trust Number Adjusted Observed
Bolton NHS Foundation Trust 80 24% 17.9%
Other trusts within the region: Greater Manchester
University Hospital of South Manchester NHS Foundation Trust 92 15.9% 15.2%
Pennine Acute Hospitals NHS Trust 209 17.8% 16.7%
Salford Royal NHS Foundation Trust 68 28.5% 28.4%
Stockport NHS Foundation Trust 102 14.7% 14.9%
Tameside Hospital NHS Foundation Trust 70 14.4% 24.3%
The Christie NHS Foundation Trust 63 20.6% 21.3%
Wrightington, Wigan and Leigh NHS Foundation Trust 78 26.4% 28.9%