GP has accused the National Audit Office of exaggerating the increase in GP partners' earnings since 2002/3 (GP, 7 March).
Our report uses NHS Information Centre data on GPs' earnings and productivity figures from the Office of National Statistics.
The earnings data from 2002/3 are fully comparable with the latest available, for 2005/6. Each figure takes account of what GPs charge NHS patients for private treatments and employers' pension contributions.
The Information Centre did initially produce incorrect data on GPs' earnings for 2004/5, but it went on to correct this.
Our report uses the corrected figure, and the 2005/6 data show that average GP earnings were £113,614. It therefore accurately states that GP partners' average earnings have increased by 58 per cent since 2002/3.
Julian Wood, director of marketing and communications, National Audit Office.