---
type: "example"
title: "EvidenceVariable Example: evidencevariable-example-placebo"
resource: "EvidenceVariable"
example: "evidencevariable-example-placebo"
---
# EvidenceVariable Example: evidencevariable-example-placebo

## Narrative

In a study of response rates if placebo is given, "placcebo given" may be the variable for the exposure of interest.

## Example XML



```xml
<?xml version="1.0" encoding="UTF-8"?>

<EvidenceVariable xmlns="http://hl7.org/fhir">
  <id value="example-placebo"/>
  <text>
    <status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml">
		
      <p>
			In a study of response rates if placebo is given, &quot;placcebo given&quot; may be the variable for the exposure of interest.
      </p>
	
    </div>
  </text>
  <name value="Placebo"/>
  <title value="Placebo"/>
  <status value="draft"/>
  <description value="Placebo"/>
  <actual value="true"/>
  <definition>
	<concept>
	  <coding>
	    <system value="http://snomed.info/sct"/>
	    <code value="182886004"/>
	    <display value="Placebo given (situation)"/>
	  </coding>
	</concept>
  </definition>
  <handling value="dichotomous"/>
</EvidenceVariable>
```