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Prototype Prescribing Outlier Dashboard for The Grange Medical Centre

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 The Grange Medical Centre is higher than most

BNF Chemical Chemical Items BNF Subparagraph Subparagraph Items Ratio Mean std Z_Score Plots
Fluocinonide 30 Topical corticosteroids 1,301 0.02 0.00 0.00 8.48
Leflunomide 41 Rheumatic disease suppressant drugs 116 0.35 0.05 0.05 6.06
Combined mestranol 2 Combined hormonal contraceptives 457 0.00 0.00 0.00 5.88
Nystatin 1 Vaginal and vulval infections 113 0.01 0.00 0.00 5.06
Pethidine hydrochloride 21 Opioid analgesics 2,859 0.01 0.00 0.00 3.60
Apomorphine hydrochloride hemihydrate 4 Dopaminergic drugs used in parkinsonism 687 0.01 0.00 0.00 3.44
Carmellose sodium 386 Tear deficiency, eye lubricant/astringent 791 0.49 0.15 0.11 3.18
Famciclovir 7 Herpes simplex and varicella-zoster 115 0.06 0.01 0.02 2.81
Terbutaline sulphate 142 Selective beta(2)-agonists 2,429 0.06 0.02 0.01 2.73
Cinnarizine 154 Drugs used in nausea and vertigo 936 0.16 0.05 0.04 2.71

Prescribing where The Grange Medical Centre is lower than most

BNF Chemical Chemical Items BNF Subparagraph Subparagraph Items Ratio Mean std Z_Score Plots
Vitamin A 0 Vitamin A 7 0.00 0.82 0.36 -2.28
    Sulfasalazine 17 Aminosalicylates 365 0.05 0.33 0.14 -2.00
    Methotrexate 33 Rheumatic disease suppressant drugs 116 0.28 0.58 0.15 -1.88
    Sodium picosulfate 0 Bowel cleansing preparations 6 0.00 0.69 0.43 -1.61
      Mometasone furoate 163 Drugs used in nasal allergy 1,406 0.12 0.32 0.13 -1.54
      Sertraline hydrochloride 1,989 Selective serotonin re-uptake inhibitors 5,951 0.33 0.46 0.09 -1.42
      Candesartan cilexetil 214 Angiotensin-II receptor antagonists 3,952 0.05 0.32 0.19 -1.40
      Carbomer 940/980 111 Tear deficiency, eye lubricant/astringent 791 0.14 0.34 0.15 -1.34
      Hydroxocobalamin 36 Drugs used in megaloblastic anaemias 1,322 0.03 0.19 0.12 -1.31
      Hydrocortisone 40 Copound haemorrhoidal preparations with corticosteroid 160 0.25 0.57 0.24 -1.31