Table 1

Numbers of patients eligible for inclusion in each indicator and performance against indicators

	Indicator	Eligible patients (n)			Performance (%)
	Indicator	Total	Mean per service	Range across services	Mean (SD)	Range across services
Eligible patients: the total number of eligible patients is different for each indicator. All patients were eligible for indicators 4 and 6 as it is the prevalence of these prescribing practices in the whole population that is of interest. For all other indicators, only the patients who were prescribed specific drugs were included as it is how these drugs are used that is of interest.
Performance: for indicators 1–6, 0% would be ideal practice. The mean performance and range scores therefore quantify apparently suboptimal practice. The interpretation of indicator 7 is more complex and is discussed in the text.
1	High dose antipsychotics	3559	73	19–203	22 (11)	0–55
2	Antipsychotic polypharmacy	3559	73	19–203	47 (10)	19–64
3	Atypical polypharmacy	1148	23	2–84	50 (33)	0–100
4	Multiple PRN	4192	86	22–221	11 (8)	0–41
5	Low dose mood stabilisers	615	13	2–32	48 (18)	0–100
6	Hypnotic prescribing	4192	86	22–221	27 (17)	4–68
7	Benzodiazepines:antidepressants	3072	63	18–151	1.2 (0.6)	0.1–3.4