> For the complete documentation index, see [llms.txt](https://docs.talentmap.com/knowledge-base/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.talentmap.com/knowledge-base/step-5-analyze-interpret-and-report/compass-reports/heatmap/heatmap-previous-period.md).

# Heatmap Previous Period

Previous period comparison in the heatmap page allows you to view changes to scores within demographic groups from one survey to another. These reports can also be exported to Excel.

### Setup <a href="#id-3-setup" id="id-3-setup"></a>

1. As a Site Admin, go to **Surveys**.
2. Select the most current survey, then click **Previous Period**.
3. Select the mapped survey, then click **Properties**. Check the box "Show in Heatmap Comparisons"

<figure><img src="/files/Q9O30hBAP1FrkRCK7QvB" alt=""><figcaption></figcaption></figure>

### View Results <a href="#id-3-view-results" id="id-3-view-results"></a>

1. Go to **Reports** > **Heatmap**.
2. Select a survey from the Survey dropdown then choose a demographic from the Demographics dropdown.
3. Select **Previous Period** in the **Compare To** dropdown.&#x20;

<figure><img src="/files/2lQr1EHw5KonpdDEXuvL" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
If you see columns with empty cells, the demographic was not mapped to a previous period or the previous period demographic is below the confidentiality threshold.
{% endhint %}


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