XML : How to use choose like if else condition in xslt

Hi people anyone who understand xslt well can you please help me. I just want to display the checkbox, if got value checkbox must be checked else not checked. I used choose but it not giving me what I want. It just give me only checked checkbox.

  <table border="1" cellspacing="0" cellpadding="0"   width="100%" style="border-style:solid;border-color:Black;border-width:1px;font-family:Arial;border-collapse: collapse;font-size:11px;" >    <xsl:for-each select="$lst4[generate-id(.) = generate-id(key('keyMoticationID', ISTMotivationID)[1])]">      <xsl:variable name="intISTMotivationID">        <xsl:value-of select="ISTMotivationID" />      </xsl:variable>      <tr>        <td style="width:2%; padding:2px;text-align:center;">          <xsl:value-of select ="$lst4[ISTMotivationID=$intISTMotivationID]/ISTReasonID"/>        </td>        <td style="width:96%; padding:2px;">          <xsl:value-of select ="$lst4[ISTMotivationID=$intISTMotivationID]/ISTMotivation"/>        </td>        <xsl:for-each select="$lst5[generate-id(.) = generate-id(key('keycheck',concat(ISTID,'+', $intISTMotivationID))[1])]">      <xsl:variable name="intISTID">        <xsl:value-of select="ISTID" />      </xsl:variable>        <xsl:choose>          <xsl:when test="$lst5[ISTID=$intISTID and ISTMotivationID=$intISTMotivationID]/ISTReasonID">            <td valign="top" style="width:2%; padding:3px; text-align:center;">              <input id="chkISTReasonID" name="ISTReasonID" type="checkbox" checked="checked"></input>            </td>          </xsl:when>          <xsl:otherwise>            <td valign="top" style="width:2%; padding:3px;text-align:center;">              <input id="chkISTReasonID" name="ISTReasonID" type="checkbox"></input>            </td>          </xsl:otherwise>        </xsl:choose>            </xsl:for-each>      </tr>    </xsl:for-each>  </table>