Trends in antibiotic prescribing in primary care for clinical syndromes subject to national recommendations to reduce antibiotic resistance, UK 1995–2011: analysis of a large database of primary care consultations

Abstract

Objectives

To measure trends in antibiotic prescribing in UK primary care in relation to nationally recommended best practice.

Patients and methods

A descriptive study linking individual patient data on diagnosis and prescription in a large primary care database, covering 537 UK general practices during 1995–2011.

Results

The proportion of cough/cold episodes for which antibiotics were prescribed decreased from 47% in 1995 to 36% in 1999, before increasing to 51% in 2011. There was marked variation by primary care practice in 2011 [10th–90th percentile range (TNPR) 32%–65%]. Antibiotic prescribing for sore throats fell from 77% in 1995 to 62% in 1999 and then stayed broadly stable (TNPR 45%–78%). Where antibiotics were prescribed for sore throat, recommended antibiotics were used in 69% of cases in 2011 (64% in 1995). The use of recommended short-course trimethoprim for urinary tract infection (UTI) in women aged 16–74 years increased from 8% in 1995 to 50% in 2011; however, a quarter of practices prescribed short courses in ≤16% of episodes in 2011. For otitis media, 85% of prescriptions were for recommended antibiotics in 2011, increasing from 77% in 1995. All these changes in annual prescribing were highly statistically significant (P < 0.001).

Conclusions

The implementation of national guidelines in UK primary care has had mixed success, with prescribing for coughs/colds, both in total and as a proportion of consultations, now being greater than before recommendations were made to reduce it. Extensive variation by practice suggests that there is significant scope to improve prescribing, particularly for coughs/colds and for UTIs.

antibiotic prescribing, primary care, surveillance trends, respiratory tract infections, otitis media, urinary tract infections