BACKGROUND: There is a 7% discrepancy between English population estimates based on census figures and those based on the registered lists of GPs. GP income under the 2004 new contract will be based on registered patient populations but a national 'de-ghosting' exercise will ensue, aiming to eliminate list inflation. OBJECTIVE: To derive an estimate of the variation in list inflation between individual general practices. METHODS: Letters were sent to all men aged 20-29 years and registered at practices based in three inner city Primary Care Trusts (n = 42 712). Non respondents received one further reminder. Cards were issued to each GP listing non responders. Patients were deducted from the GP list after six months if the GP did not verify the address. RESULTS: 42 712 letters were sent. 33.5% of registered patients were eventually deducted from the GP list (deduction figures only available for 20-24 year old group). Practice level deduction rates ranged from 7-76%. Practices with higher deduction rates achieved lower vaccination rates for 2 year olds (Pearson's r = 20.25; P = 0.005) and cervical smear rates (Pearson's r = 20.18; P = 0.04); they also had cheaper prescribing costs per ASTRO-PU (Pearson's r = 20.20; P = 0.03). CONCLUSIONS: If these findings apply to the whole registered population, the national de-ghosting exercise is likely to result in large changes to the list size of some practices. Without correcting for list inflation, primary care research based on patient list size as the denominator may underestimate various measures of GP activity, particularly in deprived inner city areas. Resource allocation is also likely to be distorted by differences in list inflation.
BACKGROUND: There is a 7% discrepancy between English population estimates based on census figures and those based on the registered lists of GPs. GP income under the 2004 new contract will be based on registered patient populations but a national 'de-ghosting' exercise will ensue, aiming to eliminate list inflation. OBJECTIVE: To derive an estimate of the variation in list inflation between individual general practices. METHODS: Letters were sent to all men aged 20-29 years and registered at practices based in three inner city Primary Care Trusts (n = 42 712). Non respondents received one further reminder. Cards were issued to each GP listing non responders. Patients were deducted from the GP list after six months if the GP did not verify the address. RESULTS: 42 712 letters were sent. 33.5% of registered patients were eventually deducted from the GP list (deduction figures only available for 20-24 year old group). Practice level deduction rates ranged from 7-76%. Practices with higher deduction rates achieved lower vaccination rates for 2 year olds (Pearson's r = 20.25; P = 0.005) and cervical smear rates (Pearson's r = 20.18; P = 0.04); they also had cheaper prescribing costs per ASTRO-PU (Pearson's r = 20.20; P = 0.03). CONCLUSIONS: If these findings apply to the whole registered population, the national de-ghosting exercise is likely to result in large changes to the list size of some practices. Without correcting for list inflation, primary care research based on patient list size as the denominator may underestimate various measures of GP activity, particularly in deprived inner city areas. Resource allocation is also likely to be distorted by differences in list inflation.
Authors: Pauline Boeckxstaens; Delphine De Smedt; Jan De Maeseneer; Lieven Annemans; Sara Willems Journal: BMC Health Serv Res Date: 2011-08-31 Impact factor: 2.655
Authors: Jennifer Dixon; Peter Smith; Hugh Gravelle; Steve Martin; Martin Bardsley; Nigel Rice; Theo Georghiou; Mark Dusheiko; John Billings; Michael De Lorenzo; Colin Sanderson Journal: BMJ Date: 2011-11-22
Authors: Simon de Lusignan; Hugh Gallagher; Tom Chan; Nicki Thomas; Jeremy van Vlymen; Michael Nation; Neerja Jain; Aumran Tahir; Elizabeth du Bois; Iain Crinson; Nigel Hague; Fiona Reid; Kevin Harris Journal: Implement Sci Date: 2009-07-14 Impact factor: 7.327