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 of Keppra tablets as a proportion of total quantity of levetiracetam tablets.|
|Why it matters||Keppra is an expensive branded form of the chemical levetiracetam. The MHRA's guidance is that it is usually unnecessary to maintain patients on a specific manufacturer's levetiracetam product unless there are specific concerns such as patient anxiety, or risk of confusion or dosing errors.|
|Tags||Central Nervous system, Standard, Cost Saving, Generic prescribing|
|Implies cost savings||Yes|
|History||View change history on GitHub →|
SELECT CAST(month AS DATE) AS month, practice AS practice_id, SUM(quantity) AS numerator FROM hscic.normalised_prescribing WHERE bnf_code IN ("0408010A0BBAAAA", "0408010A0BBABAB", "0408010A0BBACAC", "0408010A0BBAEAI") GROUP BY month, practice_id
SELECT CAST(month AS DATE) AS month, practice AS practice_id, SUM(quantity) AS denominator FROM hscic.normalised_prescribing WHERE bnf_code IN ("0408010A0AAAAAA", "0408010A0AAABAB", "0408010A0AAACAC", "0408010A0AAAIAI", "0408010A0BBAAAA", "0408010A0BBABAB", "0408010A0BBACAC", "0408010A0BBAEAI", "0408010A0BCAAAC", "0408010A0BCACAB") GROUP BY month, practice_id