Apparent specialty-level efficiency in English hospitals

What is it about?

The apparent efficiency in English hospitals was calculated at specialty level using the HRG tariff. Apparent efficiency shows a typical fan-shaped distribution as specialty size (as admissions per annum) reduces. A series of gross 'low cost' outliers emerge which demonstrate the reality of 'creaming' within the HRG Tariff.

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Why is it important?

It is almost impossible to determine which hospital-specialty combinations show higher efficiency due to the role of size-related sampling error.