PREVIEW: Antibiotic stewardship: long term antibiotics for UTIs

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 Number of prescriptions for long term prophylaxis (28 days or more) of urinary-tract infections per 1000 patients
Why it matters
Tags
Implies cost savings No
History View change history on GitHub →

Numerator SQL

SELECT
     CAST(month AS DATE) AS month,
     practice AS practice_id,
     SUM(items) AS numerator
 FROM hscic.raw_prescribing_normalised_date
 WHERE (bnf_code LIKE '0501080W0%AD' AND quantity_per_item >=28) OR --Trimethoprim 100mg tablets (brands and generic)
 (bnf_code LIKE '0501130R0%AA' AND quantity_per_item >=28) OR --Nitrofurantoin 50mg capsules (brands and generic)
 (bnf_code LIKE '0501130R0%AD' AND quantity_per_item >=28) --Nitrofurantoin 50mg tablets (brands and generic)
 GROUP BY month, practice_id

Denominator SQL

SELECT
     CAST(month AS DATE) AS month,
     practice AS practice_id,
     SUM(total_list_size / 1000.0) AS denominator
 FROM hscic.practice_statistics
 GROUP BY month, practice_id
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