About the Authors

Utz J. Pape

u.pape@imperial.ac.uk

Affiliation Department of Primary Care and Public Health, Imperial College London, London, United Kingdom

Kit Huckvale

Affiliation Department of Primary Care and Public Health, Imperial College London, London, United Kingdom

Josip Car

Affiliation Department of Primary Care and Public Health, Imperial College London, London, United Kingdom

Azeem Majeed

Affiliation Department of Primary Care and Public Health, Imperial College London, London, United Kingdom

Christopher Millett

Affiliation Department of Primary Care and Public Health, Imperial College London, London, United Kingdom

Competing Interests

JC led and KH, CM, and AM supported the development of QOF+. CM and AM have received funding to evaluate the impact of the national QOF scheme on health care inequalities. This does not alter the authors' adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Analyzed the data: UP KH CM. Wrote the paper: UP KH JC AM CM. Interpreted the results: UP KH JC AM CM. Reviewed the manuscript: UP KH JC AM CM.