```xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns4:query_definition xmlns:ns2="http://www.i2b2.org/xsd/cell/crc/psm/1.1/" xmlns:ns4="http://www.i2b2.org/xsd/cell/crc/psm/querydefinition/1.1/" xmlns:ns3="http://www.i2b2.org/xsd/cell/crc/psm/analysisdefinition/1.1/">
    <query_name>45 years old@12:35:18</query_name>
    <query_timing>ANY</query_timing>
    <specificity_scale>0</specificity_scale>
    <panel>
        <panel_number>1</panel_number>
        <panel_timing>ANY</panel_timing>
        <panel_accuracy_scale>100</panel_accuracy_scale>
        <invert>0</invert>
        <total_item_occurrences>1</total_item_occurrences>
        <item>
            <hlevel>4</hlevel>
            <item_name>45 years old</item_name>
            <item_key>\\i2b2_DEMO\i2b2\Demographics\Age\45-54 years old\45 years old\</item_key>
            <item_icon>LA</item_icon>
            <tooltip>Demographics \ Age \ 45-54 years old \ 45 years old</tooltip>
            <class>ENC</class>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns4:query_definition>

```

I want to find patients who are 45 years old within any time frame, with a specificity scale of 0, and a panel accuracy scale of 100, without inverting the search results, and only one occurrence of this item in the panel. The query is focused on the demographic information, specifically age, and the item key is located in the "Demographics \ Age \ 45-54 years old \ 45 years old" category.