The Carr-Hill funding allocation formula - named after the Professor who devised it - was introduced to underpin the 2004 GP contract, replacing the previous allocation formula - the Jarman index. It is applied to practice populations to calculate the global sum GP practices receive. It includes the following factors:
- patient age and gender (to reflect frequency of home and surgery visits)
- additional needs: standardised mortality ratio and standardised long-standing Illness for patients under the age of 65 years
- number of newly registered patients
- rurality
- costs of living in some areas
- patient age/gender for nursing/residential consultations
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