Why has antibiotic prescribing for respiratory illness declined in primary care? A longitudinal study using the General Practice Research Database

Mark Ashworth*, Radoslav Latinovic, Judith Charlton, Kate Cox, Gill Rowlands, Martin Gulliford

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

122 Citations (Scopus)

Abstract

Background: Antibiotic prescribing by general practitioners (GPs) increased in the 1980s and peaked in 1995. Prescribing volumes subsequently fell by over a quarter between 1995 and 2000, mostly accounted for by reduced antibiotic prescribing for acute respiratory illnesses. We aimed to investigate changes in consultation rates and the proportion of consultations with antibiotics prescribed for different types of respiratory tract infections. Methods: Data were derived from 108 UK general practices, covering a mean of 642685 patients, reporting data to the General Practice Research Database (GPRD) continuously between 1994 and 2000. Outcome measures: annual age- and sex-standardized consultation rates for 11 different acute respiratory infections per 1000 registered patients and proportions of these consultations resulting in an antibiotic prescription. Results: The standardized consultation rate for 'any respiratory infection' declined by 35 per cent from 422 to 273 per 1000 registered patients, per year. The largest relative reductions in consultation rates were observed for 'common cold' (50 per cent), 'laryngitis' (43 per cent) and 'sore throat' (43 per cent). The standardized proportion of consultations that resulted in an antibiotic prescription for 'any respiratory infection' declined from 79 per cent in 1994 to 67 per cent in 2000. The largest relative reductions in antibiotic prescribing rates occurred in patients recorded as suffering from 'influenza' (52 per cent), 'upper respiratory tract infections' (33 per cent) and 'laryngitis' (30 per cent). Overall, antibiotic prescriptions for all acute respiratory infections declined by 45 per cent. Conclusion: The reduction in antibiotic prescribing in common respiratory infections between 1994 and 2000 has occurred partly because GPs are prescribing antibiotics less frequently when patients consult but mainly because there are fewer consultations with these conditions. Further work should aim to understand the reasons for the decline in consultations for respiratory infections and whether further reductions in antibiotic prescribing are feasible.

Original languageEnglish
Pages (from-to)268-274
Number of pages7
JournalJournal of Public Health
Volume26
Issue number3
DOIs
Publication statusPublished - Sep 2004
Externally publishedYes

Bibliographical note

Funding Information:
We would like to thank David Armstrong for detailed advice on the search strategy for diagnostic codes used in this study. We would also like to thank Candida Ballantyne, Department of Health, for help in obtaining and interpreting the antibiotic data. This work was funded through a grant made by the Guy’s and St Thomas’ Charitable Foundation; R.L.’s post has been funded exclusively from this source. M.A. has been part funded by the South Thames Research Network (STaRNet), London. STaRNet London is funded by the NHS Directorate of Health and Social Care (DHSC) for London.

Keywords

  • Antibiotics
  • Drug prescriptions
  • Respiratory tract infections

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