Possible excess quantities of semaglutide

Below are the database queries which are used to create this measure. These are run against a copy of the BSA prescribing data which we store in Google BigQuery. We're working on making our BigQuery tables publicly available at which point it will be possible to run and modify these queries yourself. But even where code and database queries are not directly useable by others we believe it is always preferable to make them public.

Description Total quantity where a prescription is for four pens per prescription as a proportion of all semaglutide prescribing
Why it matters Semaglutide is a new (glucagon-like peptide-1) GLP-1 agonist, used to treat diabetes. It comes as a pre-filled pen and is used weekly. Each of these pens contains four doses and a single pen will last for one month However, there have been some reports that prescribers are requesting four pens per month in error. This is unlikely to be required and likely to be caused by the dose and quantity being confused on a picking list.
Tags Standard, Cost Saving, Diabetes, Safety
Implies cost savings No
Authored by richard.croker
Checked by brian.mackenna
Last reviewed 2021-04-26
Next review due 2022-04-26
Associated notebook https://github.com/ebmdatalab/jupyter-notebooks/blob/e9168900e2ecf08d80315d38fd155f1ce45a435f/measures_by_software/Draft%20ideas/Diabetes%20-%20Semaglutide/Semaglutide%20Quantity%20Draft.ipynb
History View change history on GitHub →

Numerator SQL

SELECT
     CAST(month AS DATE) AS month,
     practice AS practice_id,
     SUM(total_quantity) AS numerator
 FROM hscic.raw_prescribing_normalised
 WHERE quantity_per_item>3 AND bnf_code LIKE '0601023AW%' --Semaglutide 
 AND bnf_name LIKE '%inj%'
 GROUP BY month, practice_id

Denominator SQL

SELECT
     CAST(month AS DATE) AS month,
     practice AS practice_id,
     SUM(total_quantity) AS denominator
 FROM hscic.raw_prescribing_normalised
 WHERE bnf_code LIKE '0601023AW%' --Semaglutide 
 AND bnf_name LIKE '%inj%'
 GROUP BY month, practice_id