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<div id="sql-scripts" class="section level1">
<h1><strong>SQL Scripts</strong></h1>
<p>These SQL scripts have been developed by the community to facilitate the Extract, Transform, and Load (ETL) process from source data to the OMOP CDM.</p>
<div id="vocabulary-mapping" class="section level2">
<h2><strong>Vocabulary Mapping</strong></h2>
<div id="source-to-standard" class="section level3">
<h3>Source to Standard</h3>
<p>This script will create a large table containing all source codes and the Standard Concepts they map to. By creating this table ahead of time and referencing it during ETL, you can save processing time than if you were to map source codes on the fly. It is important to note that this script will show ALL mappings, not just those to Standard, Valid Concepts. Be sure to add a filter that will only grab the correct Standard, Valid codes.</p>
<pre class="sql"><code>SELECT c.concept_code AS SOURCE_CODE, c.concept_id AS SOURCE_CONCEPT_ID, c.concept_name AS SOURCE_CODE_DESCRIPTION, c.vocabulary_id AS SOURCE_VOCABULARY_ID, c.domain_id AS SOURCE_DOMAIN_ID, c.CONCEPT_CLASS_ID AS SOURCE_CONCEPT_CLASS_ID, c.VALID_START_DATE AS SOURCE_VALID_START_DATE, c.VALID_END_DATE AS SOURCE_VALID_END_DATE, c.INVALID_REASON AS SOURCE_INVALID_REASON, c1.concept_id AS TARGET_CONCEPT_ID, c1.concept_name AS TARGET_CONCEPT_NAME, c1.VOCABULARY_ID AS TARGET_VOCABUALRY_ID, c1.domain_id AS TARGET_DOMAIN_ID, c1.concept_class_id AS TARGET_CONCEPT_CLASS_ID, c1.INVALID_REASON AS TARGET_INVALID_REASON, c1.standard_concept AS TARGET_STANDARD_CONCEPT
FROM CONCEPT C
JOIN CONCEPT_RELATIONSHIP CR
ON C.CONCEPT_ID = CR.CONCEPT_ID_1
AND CR.invalid_reason IS NULL
AND cr.relationship_id = &#39;Maps To&#39;
JOIN CONCEPT C1
ON CR.CONCEPT_ID_2 = C1.CONCEPT_ID
AND C1.INVALID_REASON IS NULL
UNION
SELECT source_code, SOURCE_CONCEPT_ID, SOURCE_CODE_DESCRIPTION, source_vocabulary_id, c1.domain_id AS SOURCE_DOMAIN_ID, c2.CONCEPT_CLASS_ID AS SOURCE_CONCEPT_CLASS_ID, c1.VALID_START_DATE AS SOURCE_VALID_START_DATE, c1.VALID_END_DATE AS SOURCE_VALID_END_DATE, stcm.INVALID_REASON AS SOURCE_INVALID_REASON,target_concept_id, c2.CONCEPT_NAME AS TARGET_CONCEPT_NAME, target_vocabulary_id, c2.domain_id AS TARGET_DOMAIN_ID, c2.concept_class_id AS TARGET_CONCEPT_CLASS_ID, c2.INVALID_REASON AS TARGET_INVALID_REASON, c2.standard_concept AS TARGET_STANDARD_CONCEPT
FROM source_to_concept_map stcm
LEFT OUTER JOIN CONCEPT c1
ON c1.concept_id = stcm.source_concept_id
LEFT OUTER JOIN CONCEPT c2
ON c2.CONCEPT_ID = stcm.target_concept_id
WHERE stcm.INVALID_REASON IS NULL
</code></pre>
</div>
<div id="source-to-source" class="section level3">
<h3>Source to Source</h3>
<p>This script will create a large table containing all source codes and their referent Concepts. While you may be tempted to use the Source to Standard query to find these, it is important to use this one instead to populate *_SOURCE_CONCEPT_ID fields. Some source codes map to multiple Standard Concepts though they have only one source Concept. By using the Source to Standard query you may inadvertently create duplicate records in your CDM instance.</p>
<pre class="sql"><code>SELECT c.concept_code AS SOURCE_CODE, c.concept_id AS SOURCE_CONCEPT_ID, c.CONCEPT_NAME AS SOURCE_CODE_DESCRIPTION, c.vocabulary_id AS SOURCE_VOCABULARY_ID, c.domain_id AS SOURCE_DOMAIN_ID, c.concept_class_id AS SOURCE_CONCEPT_CLASS_ID, c.VALID_START_DATE AS SOURCE_VALID_START_DATE, c.VALID_END_DATE AS SOURCE_VALID_END_DATE, c.invalid_reason AS SOURCE_INVALID_REASON, c.concept_ID as TARGET_CONCEPT_ID, c.concept_name AS TARGET_CONCEPT_NAME, c.vocabulary_id AS TARGET_VOCABULARY_ID, c.domain_id AS TARGET_DOMAIN_ID, c.concept_class_id AS TARGET_CONCEPT_CLASS_ID, c.INVALID_REASON AS TARGET_INVALID_REASON, c.STANDARD_CONCEPT AS TARGET_STANDARD_CONCEPT
FROM CONCEPT c
UNION
SELECT source_code, SOURCE_CONCEPT_ID, SOURCE_CODE_DESCRIPTION, source_vocabulary_id, c1.domain_id AS SOURCE_DOMAIN_ID, c2.CONCEPT_CLASS_ID AS SOURCE_CONCEPT_CLASS_ID, c1.VALID_START_DATE AS SOURCE_VALID_START_DATE, c1.VALID_END_DATE AS SOURCE_VALID_END_DATE,stcm.INVALID_REASON AS SOURCE_INVALID_REASON, target_concept_id, c2.CONCEPT_NAME AS TARGET_CONCEPT_NAME, target_vocabulary_id, c2.domain_id AS TARGET_DOMAIN_ID, c2.concept_class_id AS TARGET_CONCEPT_CLASS_ID, c2.INVALID_REASON AS TARGET_INVALID_REASON, c2.standard_concept AS TARGET_STANDARD_CONCEPT
FROM source_to_concept_map stcm
LEFT OUTER JOIN CONCEPT c1
ON c1.concept_id = stcm.source_concept_id
LEFT OUTER JOIN CONCEPT c2
ON c2.CONCEPT_ID = stcm.target_concept_id
WHERE stcm.INVALID_REASON IS NULL</code></pre>
</div>
</div>
<div id="era-tables" class="section level2">
<h2><strong>Era Tables</strong></h2>
<div id="condition-eras" class="section level3">
<h3>Condition Eras</h3>
<p>This script will insert values into the CONDITION_ERA table given that the CONDITION_OCCURRENCE table is populated. It will string together condition records that have &lt;= 30 days between them into eras during which the Person is assumed to have the given condition.</p>
<pre class="sql"><code>/****************************************************
OHDSI-SQL File Instructions
-----------------------------
1. Set parameter name of schema that contains CDMv4 instance
(@SOURCE_CDMV4, @SOURCE_CDMV4_SCHEMA)
2. Set parameter name of schema that contains CDMv5 instance
(@TARGET_CDMV5, @TARGET_CDMV5_SCHEMA)
3. Run this script through SqlRender to produce a script that will work in your
source dialect. SqlRender can be found here: https://github.com/OHDSI/SqlRender
4. Run the script produced by SQL Render on your target RDBDMS.
&lt;RDBMS&gt; File Instructions
-------------------------
1. This script will hold a number of placeholders for your CDM V4 and CDMV5
database/schema. In order to make this file work in your environment, you
should plan to do a global &quot;FIND AND REPLACE&quot; on this file to fill in the
file with values that pertain to your environment. The following are the
tokens you should use when doing your &quot;FIND AND REPLACE&quot; operation:
[CDM]
[CDM].[CDMSCHEMA]
*********************************************************************************/
/* SCRIPT PARAMETERS */
{DEFAULT @TARGET_CDMV5 = &#39;[CDM]&#39; } -- The target CDMv5 database name
{DEFAULT @TARGET_CDMV5_SCHEMA = &#39;[CDM].[CDMSCHEMA]&#39; } -- the target CDMv5 database plus schema
USE @TARGET_CDMV5;
/****
CONDITION ERA
Note: Eras derived from CONDITION_OCCURRENCE table, using 30d gap
****/
IF OBJECT_ID(&#39;tempdb..#condition_era_phase_1&#39;, &#39;U&#39;) IS NOT NULL
DROP TABLE #condition_era_phase_1;
/* / */
IF OBJECT_ID(&#39;tempdb..#cteConditionTarget&#39;, &#39;U&#39;) IS NOT NULL
DROP TABLE #cteConditionTarget;
/* / */
-- create base eras from the concepts found in condition_occurrence
SELECT co.PERSON_ID
,co.condition_concept_id
,co.CONDITION_START_DATE
,COALESCE(co.CONDITION_END_DATE, DATEADD(day, 1, CONDITION_START_DATE)) AS CONDITION_END_DATE
INTO #cteConditionTarget
FROM @TARGET_CDMV5_SCHEMA.CONDITION_OCCURRENCE co;
/* / */
IF OBJECT_ID(&#39;tempdb..#cteCondEndDates&#39;, &#39;U&#39;) IS NOT NULL
DROP TABLE #cteCondEndDates;
/* / */
SELECT PERSON_ID
,CONDITION_CONCEPT_ID
,DATEADD(day, - 30, EVENT_DATE) AS END_DATE -- unpad the end date
INTO #cteCondEndDates
FROM (
SELECT E1.PERSON_ID
,E1.CONDITION_CONCEPT_ID
,E1.EVENT_DATE
,COALESCE(E1.START_ORDINAL, MAX(E2.START_ORDINAL)) START_ORDINAL
,E1.OVERALL_ORD
FROM (
SELECT PERSON_ID
,CONDITION_CONCEPT_ID
,EVENT_DATE
,EVENT_TYPE
,START_ORDINAL
,ROW_NUMBER() OVER (
PARTITION BY PERSON_ID
,CONDITION_CONCEPT_ID ORDER BY EVENT_DATE
,EVENT_TYPE
) AS OVERALL_ORD -- this re-numbers the inner UNION so all rows are numbered ordered by the event date
FROM (
-- select the start dates, assigning a row number to each
SELECT PERSON_ID
,CONDITION_CONCEPT_ID
,CONDITION_START_DATE AS EVENT_DATE
,- 1 AS EVENT_TYPE
,ROW_NUMBER() OVER (
PARTITION BY PERSON_ID
,CONDITION_CONCEPT_ID ORDER BY CONDITION_START_DATE
) AS START_ORDINAL
FROM #cteConditionTarget
UNION ALL
-- pad the end dates by 30 to allow a grace period for overlapping ranges.
SELECT PERSON_ID
,CONDITION_CONCEPT_ID
,DATEADD(day, 30, CONDITION_END_DATE)
,1 AS EVENT_TYPE
,NULL
FROM #cteConditionTarget
) RAWDATA
) E1
INNER JOIN (
SELECT PERSON_ID
,CONDITION_CONCEPT_ID
,CONDITION_START_DATE AS EVENT_DATE
,ROW_NUMBER() OVER (
PARTITION BY PERSON_ID
,CONDITION_CONCEPT_ID ORDER BY CONDITION_START_DATE
) AS START_ORDINAL
FROM #cteConditionTarget
) E2 ON E1.PERSON_ID = E2.PERSON_ID
AND E1.CONDITION_CONCEPT_ID = E2.CONDITION_CONCEPT_ID
AND E2.EVENT_DATE &lt;= E1.EVENT_DATE
GROUP BY E1.PERSON_ID
,E1.CONDITION_CONCEPT_ID
,E1.EVENT_DATE
,E1.START_ORDINAL
,E1.OVERALL_ORD
) E
WHERE (2 * E.START_ORDINAL) - E.OVERALL_ORD = 0;
/* / */
IF OBJECT_ID(&#39;tempdb..#cteConditionEnds&#39;, &#39;U&#39;) IS NOT NULL
DROP TABLE #cteConditionEnds;
/* / */
SELECT c.PERSON_ID
,c.CONDITION_CONCEPT_ID
,c.CONDITION_START_DATE
,MIN(e.END_DATE) AS ERA_END_DATE
INTO #cteConditionEnds
FROM #cteConditionTarget c
INNER JOIN #cteCondEndDates e ON c.PERSON_ID = e.PERSON_ID
AND c.CONDITION_CONCEPT_ID = e.CONDITION_CONCEPT_ID
AND e.END_DATE &gt;= c.CONDITION_START_DATE
GROUP BY c.PERSON_ID
,c.CONDITION_CONCEPT_ID
,c.CONDITION_START_DATE;
/* / */
INSERT INTO @TARGET_CDMV5_SCHEMA.condition_era (
condition_era_id
,person_id
,condition_concept_id
,condition_era_start_date
,condition_era_end_date
,condition_occurrence_count
)
SELECT row_number() OVER (
ORDER BY person_id
) AS condition_era_id
,person_id
,CONDITION_CONCEPT_ID
,min(CONDITION_START_DATE) AS CONDITION_ERA_START_DATE
,ERA_END_DATE AS CONDITION_ERA_END_DATE
,COUNT(*) AS CONDITION_OCCURRENCE_COUNT
FROM #cteConditionEnds
GROUP BY person_id
,CONDITION_CONCEPT_ID
,ERA_END_DATE;</code></pre>
</div>
<div id="drug-eras" class="section level3">
<h3>Drug Eras</h3>
<p>If the DRUG_EXPOSURE table is populated this script will string together periods of time that a person is exposed to an active drug ingredient, allowing for 30 gaps in between. It will then insert the resulting era records into the DRUG_ERA table.</p>
<pre class="sql"><code>
/****************************************************
OHDSI-SQL File Instructions
-----------------------------
1. Set parameter name of schema that contains CDMv4 instance
(@SOURCE_CDMV4, @SOURCE_CDMV4_SCHEMA)
2. Set parameter name of schema that contains CDMv5 instance
(@TARGET_CDMV5, @TARGET_CDMV5_SCHEMA)
3. Run this script through SqlRender to produce a script that will work in your
source dialect. SqlRender can be found here: https://github.com/OHDSI/SqlRender
4. Run the script produced by SQL Render on your target RDBDMS.
&lt;RDBMS&gt; File Instructions
-------------------------
1. This script will hold a number of placeholders for your CDM V4 and CDMV5
database/schema. In order to make this file work in your environment, you
should plan to do a global &quot;FIND AND REPLACE&quot; on this file to fill in the
file with values that pertain to your environment. The following are the
tokens you should use when doing your &quot;FIND AND REPLACE&quot; operation:
[CDM]
[CDM].[CDMSCHEMA]
*********************************************************************************/
/* SCRIPT PARAMETERS */
{DEFAULT @TARGET_CDMV5 = &#39;[CDM]&#39; } -- The target CDMv5 database name
{DEFAULT @TARGET_CDMV5_SCHEMA = &#39;[CDM].[CDMSCHEMA]&#39; } -- the target CDMv5 database plus schema
USE @TARGET_CDMV5;
/****
DRUG ERA
Note: Eras derived from DRUG_EXPOSURE table, using 30d gap
****/
IF OBJECT_ID(&#39;tempdb..#cteDrugTarget&#39;, &#39;U&#39;) IS NOT NULL
DROP TABLE #cteDrugTarget;
/* / */
-- Normalize DRUG_EXPOSURE_END_DATE to either the existing drug exposure end date, or add days supply, or add 1 day to the start date
SELECT d.DRUG_EXPOSURE_ID
,d.PERSON_ID
,c.CONCEPT_ID
,d.DRUG_TYPE_CONCEPT_ID
,DRUG_EXPOSURE_START_DATE
,COALESCE(DRUG_EXPOSURE_END_DATE, DATEADD(day, DAYS_SUPPLY, DRUG_EXPOSURE_START_DATE), DATEADD(day, 1, DRUG_EXPOSURE_START_DATE)) AS DRUG_EXPOSURE_END_DATE
,c.CONCEPT_ID AS INGREDIENT_CONCEPT_ID
INTO #cteDrugTarget
FROM @TARGET_CDMV5_SCHEMA.DRUG_EXPOSURE d
INNER JOIN @TARGET_CDMV5_SCHEMA.CONCEPT_ANCESTOR ca ON ca.DESCENDANT_CONCEPT_ID = d.DRUG_CONCEPT_ID
INNER JOIN @TARGET_CDMV5_SCHEMA.CONCEPT c ON ca.ANCESTOR_CONCEPT_ID = c.CONCEPT_ID
WHERE c.VOCABULARY_ID = &#39;RxNorm&#39;
AND c.CONCEPT_CLASS_ID = &#39;Ingredient&#39;;
/* / */
IF OBJECT_ID(&#39;tempdb..#cteEndDates&#39;, &#39;U&#39;) IS NOT NULL
DROP TABLE #cteEndDates;
/* / */
SELECT PERSON_ID
,INGREDIENT_CONCEPT_ID
,DATEADD(day, - 30, EVENT_DATE) AS END_DATE -- unpad the end date
INTO #cteEndDates
FROM (
SELECT E1.PERSON_ID
,E1.INGREDIENT_CONCEPT_ID
,E1.EVENT_DATE
,COALESCE(E1.START_ORDINAL, MAX(E2.START_ORDINAL)) START_ORDINAL
,E1.OVERALL_ORD
FROM (
SELECT PERSON_ID
,INGREDIENT_CONCEPT_ID
,EVENT_DATE
,EVENT_TYPE
,START_ORDINAL
,ROW_NUMBER() OVER (
PARTITION BY PERSON_ID
,INGREDIENT_CONCEPT_ID ORDER BY EVENT_DATE
,EVENT_TYPE
) AS OVERALL_ORD -- this re-numbers the inner UNION so all rows are numbered ordered by the event date
FROM (
-- select the start dates, assigning a row number to each
SELECT PERSON_ID
,INGREDIENT_CONCEPT_ID
,DRUG_EXPOSURE_START_DATE AS EVENT_DATE
,0 AS EVENT_TYPE
,ROW_NUMBER() OVER (
PARTITION BY PERSON_ID
,INGREDIENT_CONCEPT_ID ORDER BY DRUG_EXPOSURE_START_DATE
) AS START_ORDINAL
FROM #cteDrugTarget
UNION ALL
-- add the end dates with NULL as the row number, padding the end dates by 30 to allow a grace period for overlapping ranges.
SELECT PERSON_ID
,INGREDIENT_CONCEPT_ID
,DATEADD(day, 30, DRUG_EXPOSURE_END_DATE)
,1 AS EVENT_TYPE
,NULL
FROM #cteDrugTarget
) RAWDATA
) E1
INNER JOIN (
SELECT PERSON_ID
,INGREDIENT_CONCEPT_ID
,DRUG_EXPOSURE_START_DATE AS EVENT_DATE
,ROW_NUMBER() OVER (
PARTITION BY PERSON_ID
,INGREDIENT_CONCEPT_ID ORDER BY DRUG_EXPOSURE_START_DATE
) AS START_ORDINAL
FROM #cteDrugTarget
) E2 ON E1.PERSON_ID = E2.PERSON_ID
AND E1.INGREDIENT_CONCEPT_ID = E2.INGREDIENT_CONCEPT_ID
AND E2.EVENT_DATE &lt;= E1.EVENT_DATE
GROUP BY E1.PERSON_ID
,E1.INGREDIENT_CONCEPT_ID
,E1.EVENT_DATE
,E1.START_ORDINAL
,E1.OVERALL_ORD
) E
WHERE 2 * E.START_ORDINAL - E.OVERALL_ORD = 0;
/* / */
IF OBJECT_ID(&#39;tempdb..#cteDrugExpEnds&#39;, &#39;U&#39;) IS NOT NULL
DROP TABLE #cteDrugExpEnds;
/* / */
SELECT d.PERSON_ID
,d.INGREDIENT_CONCEPT_ID
,d.DRUG_TYPE_CONCEPT_ID
,d.DRUG_EXPOSURE_START_DATE
,MIN(e.END_DATE) AS ERA_END_DATE
INTO #cteDrugExpEnds
FROM #cteDrugTarget d
INNER JOIN #cteEndDates e ON d.PERSON_ID = e.PERSON_ID
AND d.INGREDIENT_CONCEPT_ID = e.INGREDIENT_CONCEPT_ID
AND e.END_DATE &gt;= d.DRUG_EXPOSURE_START_DATE
GROUP BY d.PERSON_ID
,d.INGREDIENT_CONCEPT_ID
,d.DRUG_TYPE_CONCEPT_ID
,d.DRUG_EXPOSURE_START_DATE;
/* / */
INSERT INTO @TARGET_CDMV5_SCHEMA.drug_era
SELECT row_number() OVER (
ORDER BY person_id
) AS drug_era_id
,person_id
,INGREDIENT_CONCEPT_ID
,min(DRUG_EXPOSURE_START_DATE) AS drug_era_start_date
,ERA_END_DATE
,COUNT(*) AS DRUG_EXPOSURE_COUNT
,30 AS gap_days
FROM #cteDrugExpEnds
GROUP BY person_id
,INGREDIENT_CONCEPT_ID
,drug_type_concept_id
,ERA_END_DATE;
</code></pre>
</div>
</div>
<div id="bonus-queries" class="section level2">
<h2><strong>Bonus Queries</strong></h2>
<div id="visit-concept-roll-up" class="section level3">
<h3>Visit Concept Roll-up</h3>
<p>The query below will utilize the Visit Concept hierarcy to find the highest-level ancestors. In the case that both the VISIT_OCCURRENCE and VISIT_DETAIL tables are populated, it is good practice (though not required) to use the highest-level ancestors as the VISIT_CONCEPT_IDs in the VISIT_OCCURRENCE table and their children as the VISIT_DETAIL_CONCEPT_IDs in the VISIT_DETAIL table. This relationship between the VISIT_OCCURRENCE and VISIT_DETAIL tables allow for standardized Visit logic to be written, building Visits from Visit Details. For more information on how this can be done, please see the <a href="https://ohdsi.github.io/ETL-LambdaBuilder/Optum%20Clinformatics/Optum_visit_occurrence.html">Optum Extended ETL documentation</a>.</p>
<pre class="sql"><code>SELECT concept_id, concept_name
FROM concept
LEFT JOIN concept_ancestor
ON concept_id=descendant_concept_id
AND ancestor_concept_id!=descendant_concept_id
WHERE domain_id=&#39;Visit&#39;
AND standard_concept=&#39;S&#39;
AND ancestor_concept_id IS NULL</code></pre>
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