XSLT Exclude Empty Elements

I'm a rank amateur when it comes to XSLT. I have a stylesheet that works except that I need to exclude empty elements. It's a long stylesheet, so here is an abbreviated version.

<?xml version="1.0" encoding="utf-8"?>

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:strip-space elements="*"/>
  <xsl:output method = "xml" indent = "yes" />

  <!--
  This is a transform to create an XML file from the ANX file output by the Debt Collection HotDocs intake.
  -->
  
  <xsl:template match="/AnswerSet"> 

	<xsl:element name="OnlineIntake">
.
.
.
                 <xsl:for-each select="//Answer[@name='Factor']/RptValue/MCValue">

			<xsl:variable name="getfactors" select="position()"/>

			<xsl:element name="Factors">			
				<xsl:element name="Factor">					
						<xsl:value-of select="//Answer[@name='Factor']//MCValue[$getfactors]"/>		
				</xsl:element>			
				<xsl:element name="FactorAmt">
					<xsl:value-of select="//Answer[@name='FactorAmount']//NumValue[$getfactors]"/>
				</xsl:element>				
			</xsl:element>  <!-- Factors -->		
		</xsl:for-each> <!-- end of foreach for Factors -->

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The input looks like this

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<AnswerSet title="" version="1.1">
	<Answer name="(ANSWER FILE HISTORY)">
		<TextValue>Debt Collection Intake : May 6, 2015, 15:15
Maintenance Interview : February 18, 2015, 15:34
</TextValue>
.
.
.
<Answer name="Factor">
		<RptValue>
			<MCValue>
				<SelValue>Child Care/Work-Related</SelValue>
			</MCValue>
			<MCValue>
				<SelValue>Current income taxes</SelValue>
			</MCValue>
			<MCValue>
				<SelValue>Mortgage payments</SelValue>
			</MCValue>
			<MCValue>
				<SelValue>Rent</SelValue>
			</MCValue>
			<MCValue>
				<SelValue>Transportation Expenses/Work-Related</SelValue>
			</MCValue>
			<MCValue>
				<SelValue>Tools &amp; Equipment/Work-Related</SelValue>
			</MCValue>
			<MCValue unans="true"/>
		</RptValue>
	</Answer>
<Answer name="Factor">
		<RptValue>
			<MCValue>
				<SelValue>Child Care/Work-Related</SelValue>
			</MCValue>
			<MCValue>
				<SelValue>Current income taxes</SelValue>
			</MCValue>
			<MCValue>
				<SelValue>Mortgage payments</SelValue>
			</MCValue>
			<MCValue>
				<SelValue>Rent</SelValue>
			</MCValue>
			<MCValue>
				<SelValue>Transportation Expenses/Work-Related</SelValue>
			</MCValue>
			<MCValue>
				<SelValue>Tools &amp; Equipment/Work-Related</SelValue>
			</MCValue>
			<MCValue unans="true"/>
		</RptValue>
</AnswerSet>

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And the output looks like this

<Factors>
    <Factor>Child Care/Work-Related</Factor>
    <FactorAmt>100.0000000</FactorAmt>
  </Factors>
  <Factors>
    <Factor>Current income taxes</Factor>
    <FactorAmt>250.0000000</FactorAmt>
  </Factors>
  <Factors>
    <Factor>Mortgage payments</Factor>
    <FactorAmt>600.0000000</FactorAmt>
  </Factors>
  <Factors>
    <Factor>Rent</Factor>
    <FactorAmt>0.0000000</FactorAmt>
  </Factors>
  <Factors>
    <Factor>Transportation Expenses/Work-Related</Factor>
    <FactorAmt>100.0000000</FactorAmt>
  </Factors>
  <Factors>
    <Factor>Tools &amp; Equipment/Work-Related</Factor>
    <FactorAmt>75.0000000</FactorAmt>
  </Factors>
  <Factors>
    <Factor/>
    <FactorAmt/>
  </Factors>

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The output should not have the last empty <Factors> elements. Everything I've tried so far either crashes the transform or skips the Factors output. I can't change the input file, so can one of you experts help?