Data collection and analysis Prospective data on medication optimisation from pharmacist-led clinics were collected on standardised clinic discharge forms and collated in a password-protected Microsoft Access database on NHS-encrypted computers. Data on the prescribing of medication were summarised in percentages. Data on target doses of medication were summarised in percentage of patients on graded categorical thresholds (ie, 0%, 1%–24%, 25%–49%, 50%–74%, 75%–99% and 100% of target dose) and mean percentage of target dose achieved across all patients. The χ2 tests and t-tests were used to test for differences in the endpoints at the end of the programme compared with baseline.