initial commit

01_medicine_lookups/dispensing_by_vtm_or_vmp.sql

@@ -0,0 +1,78 @@
+/*
+    Dispensing by VTM or VMP
+    ========================
+
+    Purpose:
+    Summarise dispensed items, patients, and quantity for a medicine group
+    using national dispensing data.
+
+    Data source:
+    NATIONAL.GPMED."MedicinesDispensedInPrimarycare"
+
+    Notes:
+    - Dispensing data is official/payment-oriented and usually lags prescribing.
+    - Set either VTM_SNOMED_CODE or VMP_SNOMED_CODE. Leave the other as NULL.
+    - ProcessingPeriodDate is a month-level period date.
+*/
+
+SET START_PERIOD = '2025-04-01';
+SET END_PERIOD = '2026-03-31';
+SET VTM_SNOMED_CODE = NULL;
+SET VMP_SNOMED_CODE = 'REPLACE_WITH_VMP_SNOMED_CODE';
+
+WITH products AS (
+    -- Expands the selected VTM/VMP into product-level dm+d codes found in GPMED.
+    SELECT DISTINCT
+        "ProductSnomedCode",
+        "ProductDescription",
+        "TherapeuticMoietyName",
+        "BNFCode"
+    FROM DATA_HUB.DWH."DimMedicineAndDevice"
+    WHERE ($VTM_SNOMED_CODE IS NOT NULL AND "TherapeuticMoietySnomedCode" = $VTM_SNOMED_CODE)
+       OR ($VMP_SNOMED_CODE IS NOT NULL AND "MedicinalLatestSnomedCode" = $VMP_SNOMED_CODE)
+       OR ($VMP_SNOMED_CODE IS NOT NULL AND "ProductSnomedCode" = $VMP_SNOMED_CODE)
+),
+practices AS (
+    -- Restricts output to active Norfolk and Suffolk parent GP practices.
+    SELECT DISTINCT
+        "OrganisationCode" AS "PracticeCode",
+        "OrganisationName" AS "PracticeName",
+        "PCNName",
+        "PlaceName",
+        "AllianceName"
+    FROM DATA_HUB.DWH."DimOrganisationAndSite"
+    WHERE "OrganisationSubType" = 'GP Practice'
+      AND "IsSiteActive" = 'Yes'
+      AND "IsSiteNorfolkAndSuffolk" = 'Yes'
+      AND "SiteCode" = "OrganisationCode"
+)
+SELECT
+    gpm."ProcessingPeriodDate" AS "PeriodDate",
+    p."PracticeCode",
+    p."PracticeName",
+    p."PCNName",
+    p."PlaceName",
+    p."AllianceName",
+    prod."TherapeuticMoietyName",
+    COUNT(DISTINCT gpm."PatientPseudonym") AS "Patients",
+    SUM(gpm."ItemCount") AS "Items",
+    SUM(gpm."PaidQuantity") AS "PaidQuantity"
+FROM NATIONAL.GPMED."MedicinesDispensedInPrimarycare" gpm
+INNER JOIN products prod
+    ON gpm."PaiddmdCode" = prod."ProductSnomedCode"
+INNER JOIN practices p
+    ON gpm."CostCentreODSCode" = p."PracticeCode"
+WHERE gpm."ProcessingPeriodDate" BETWEEN $START_PERIOD AND $END_PERIOD
+  AND gpm."PatientPseudonym" IS NOT NULL
+GROUP BY
+    gpm."ProcessingPeriodDate",
+    p."PracticeCode",
+    p."PracticeName",
+    p."PCNName",
+    p."PlaceName",
+    p."AllianceName",
+    prod."TherapeuticMoietyName"
+ORDER BY
+    "PeriodDate",
+    "PracticeName",
+    prod."TherapeuticMoietyName";