---
type: "example"
title: "Evidence Example: evidence-example-quoted-source"
resource: "Evidence"
example: "evidence-example-quoted-source"
---
# Evidence Example: evidence-example-quoted-source

## Example XML



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

<Evidence xmlns="http://hl7.org/fhir">.
    <id value="example-quoted-source"/>
<!--    <extension url="http://hl7.org/fhir/StructureDefinition/relates-to-with-quotation">
        <extension url="type">
            <valueCode value="derived-from"/>
        </extension>
        <extension url="quotation">
            <valueMarkdown value="Prevalence of PASC at 30 days post-infection was 68.7% (95% confidence interval: 63.4, 73.9)."/>
        </extension>
        <extension url="targetReference">
            <valueReference>
                <reference value="Citation/238142"/>
                <type value="Citation"/>
                <display value="34347785 Post-acute sequelae of COVID-19 in a non-hospitalized cohort: Results from the Arizona CoVHORT"/>
            </valueReference>
        </extension>
    </extension> !-->
	<title value="Quoted Source: Prevalence of PASC at 30 days"/>
	<status value="active"/>
	<description value="An example of using the relatedArtifact element to quote a line of text from the evidence source."/>
	<variableDefinition>
		<description value="People with a history of COVID-19 who were not hospitalized (Arizona CoVHORT)"/>
		<variableRole value="population"/>
	</variableDefinition>
	<variableDefinition>
		<description value="Post-acute sequelae of COVID-19"/>
		<variableRole value="outcome"/>
	</variableDefinition>
	<studyDesign>
		<coding>
			<system value="https://fevir.net/sevco"/>
			<code value="SEVCO:01002"/>
			<display value="Observational research"/>
		</coding>
		<coding>
			<system value="https://fevir.net/sevco"/>
			<code value="SEVCO:01028"/>
			<display value="Longitudinal data collection"/>
		</coding>
	</studyDesign>
	<statistic>
		<description value="Prevalence 68.7% (95% Confidence interval 63.4% to 73.9%)"/>
		<statisticType>
			<coding>
				<system value="https://fevir.net/resources/CodeSystem/27270"/>
				<code value="STATO:0000412"/>
				<display value="prevalence"/>
			</coding>
		</statisticType>
		<quantity>
			<value value="68.7"/>
			<unit value="%"/>
			<system value="http://unitsofmeasure.org"/>
			<code value="%"/>
		</quantity>
		<attributeEstimate>
			<description value="95% Confidence interval 63.4% to 73.9%"/>
			<type>
				<coding>
					<system value="https://fevir.net/resources/CodeSystem/27270"/>
					<code value="TBD:0000059"/>
					<display value="Confidence interval"/>
				</coding>
			</type>
			<level value="0.95"/>
			<range>
				<low>
					<value value="63.4"/>
					<unit value="%"/>
					<system value="http://unitsofmeasure.org"/>
					<code value="%"/>
				</low>
				<high>
					<value value="73.9"/>
					<unit value="%"/>
					<system value="http://unitsofmeasure.org"/>
					<code value="%"/>
				</high>
			</range>
		</attributeEstimate>
	</statistic>
</Evidence>
```