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Prototype Prescribing Outlier Dashboard for Huddersfield Road Surgery

At OpenPrescribing we are piloting a number of data-driven approaches to identify unusual prescribing and collect feedback on this prescribing to inform development of new tools to support prescribers and organisations to audit and review prescribing. These pilot results are provided for the interest of advanced users, although we don't know how relevant they are in practice. There is substantial variation in prescribing behaviours, across various different areas of medicine. Some variation can be explained by demographic changes, or local policies or guidelines, but much of the remaining variation is less easy to explain.

The DataLab is keen to hear your feedback on the results. You can do this by completing the following survey or emailing us at [email protected]. Please DO NOT INCLUDE IDENTIFIABLE PATIENT information in your feedback. All feedback is helpful, you can send short or detailed feedback.

This report has been developed to automatically identify prescribing patterns at a chemical level which are furthest away from “typical prescribing” and can be classified as an “outlier”. We calculate the number of prescriptions for each chemical in the BNF coding system, the count of all prescriptions within that chemical's BNF subparagraph, for prescriptions dispensed between June 2021 and December 2021. We then calculate the ratio of these counts along with the mean and standard deviation of those ratios across all Practices. From this we can calculate the “z-score”, which is a measure of how many standard deviations a given Practice is from the population mean. We then rank your “z-scores” to find the top 10 results where prescribing is an outlier for prescribing higher than its peers and those where it is an outlier for prescribing lower than its peers.

For each outlier chemical, a kernel density estimation plot of all Practice's chemical:subparagraph ratios is provided, with this Practice's ratio overlaid in red.

It is important to remember that this information was generated automatically and it is therefore likely that some of the behaviour is warranted. This report seeks only to collect information about where this variation may be warranted and where it might not, to inform research on this topic. Our full analytical method code is openly available on GitHub here.

This is a new, experimental feature. We'd love to .

Prescribing where Huddersfield Road Surgery is higher than most

BNF Chemical Chemical Items BNF Subparagraph Subparagraph Items Ratio Mean std Z_Score Plots
Propamidine isetionate 4 Antibacterials 137 0.03 0.00 0.00 7.67
Sirolimus 27 Corticosteroids and other immunosuppressants 31 0.87 0.03 0.14 6.06
Levonorgestrel 43 Oral progestogen-only contraceptives 443 0.10 0.01 0.02 4.99
Darifenacin hydrobromide 316 Drugs for urinary frequency enuresis and incontinence 2,079 0.15 0.01 0.03 4.01
Dexpanthenol 14 Emollients 550 0.03 0.00 0.01 3.71
Tenoxicam 1 Non-steroidal anti-inflammatory drugs 2,049 0.00 0.00 0.00 3.55
Nicardipine hydrochloride 21 Calcium-channel blockers 7,466 0.00 0.00 0.00 2.91
Co-danthrusate (Dantron/docusate sodium) 1 Stimulant laxatives 964 0.00 0.00 0.00 2.90
Valsartan 315 Angiotensin-II receptor antagonists 4,398 0.07 0.02 0.02 2.86
Levocarnitine 7 Drugs used in metabolic disorders 7 1.00 0.12 0.32 2.80

Prescribing where Huddersfield Road Surgery is lower than most

BNF Chemical Chemical Items BNF Subparagraph Subparagraph Items Ratio Mean std Z_Score Plots
Permethrin 1 Parasiticidal preparations 3 0.33 0.83 0.24 -2.07
Brinzolamide 48 Treatment of glaucoma 1,979 0.02 0.09 0.04 -1.78
Estradiol 46 Preparations for vaginal/vulval changes 211 0.22 0.55 0.20 -1.60
Clarithromycin 183 Macrolides 571 0.32 0.57 0.16 -1.58
Desogestrel 377 Oral progestogen-only contraceptives 443 0.85 0.93 0.05 -1.54
Umeclidinium bromide/vilanterol 16 Compound bronchodilator preparations 248 0.06 0.50 0.30 -1.47
Bimatoprost 49 Treatment of glaucoma 1,979 0.02 0.11 0.06 -1.45
Other food for special diet preparations 49 Foods for special diets 163 0.30 0.65 0.24 -1.44
Glucose blood testing reagents 855 Diabetic diagnostic and monitoring agents 956 0.89 0.94 0.03 -1.41
Moxonidine 19 Centrally-acting antihypertensive drugs 103 0.18 0.65 0.33 -1.40