Several practices are shown to have very small list sizes; this is because patient list sizes as at 1 April 2019 are used for the QOF publication, and practices may have participated in QOF during the reporting year but closed at or towards the end of the reporting year. This should be borne in mind when analysing disease prevalence.
A number of practices in Kernow CCG and Devon CCG have been excluded from the publication following guidance received during the validation exercise, which identified issues in the data extracted from CQRS which rendered it misleading. A description of this issue, and a list of the practices excluded from the publication on this basis, is provided in the 'QOF 2018-19: Practice validation comments' file, which is available on the publication homepage. This should be taken into consideration when interpreting the 2018-19 QOF data.
QOF data are used to calculate annual payments to GP practices. GPs are therefore incentivised to maintain accurate and up to date patient records in respect of QOF information. Considering this, GP practices’ clinical information system suppliers deliver systems to maximise recording and quality of coding for information relating to the QOF.
NHS Digital uses a snapshot of QOF data as available via CQRS some months after the financial year-end as the basis for QOF publications; for 2018-19, this extraction was made on 2 July. Practices were advised to sign-off QOF achievement before midnight on the 31 March 2019.