GA4 Model comparison report in Attribution

What is Model Comparison in GA4?

As the name suggests, the Model Comparison report in GA4 is used to compare different attribution models to each other. Such comparison is carried out to identify new optimization opportunities by valuating a marketing channel under different attribution models. 

What are the requirements for using the GA4 Model Comparison report?

The primary requirement for using the Model Comparison report in GA4 is ecommerce tracking and/or goal conversion tracking setup for your GA4 property

Your GA4 property needs to have goal conversion and/or ecommerce conversion data before you can use and benefit from the GA4 Model Comparison report.

Ideally, your GA4 reporting view must have at least 30 days of historical data so your data analysis is statistically significant. If you are using Google Ads then make sure that you link your GA4 property with your Google Ads account.

How to use the Model Comparison in GA4?

In order to access and use the Model Comparison in GA4 follow the steps below:

Step-1: Navigate to your GA4 property.

Step-2: Click on the ‘Advertising’ link from the left-hand side navigation:

advertising ga4 1

You should now see the Advertising Snapshot report:

advertising snapshot ga4 1

Step-3: Click on the ‘Model comparison’ link from the left-hand side navigation:

GA4 Model comparison report

Step-4: Select the date range from the date picker drop-down menu:

select date range

The longer the date range you select, the more statistically significant the reported data would be.

Note: The Model Comparison report includes data from June 14, 2021, onwards.

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Step-5: Click on the ‘conversion events’ drop-down menu:

conversion events drop down menu

Step-6: Select the conversion event for which you want to see the data in your Model comparison report while deselect all other conversion events:

select conversion event

Step-7: Scroll down and then click on the ‘Apply’ button:

apply button

You would now see the Model Comparison report only for the selected conversion event:

model comparison report

Note: By default, the Model Comparison report gives an overview of all your conversion events.

Step-8: Change the reporting time to ‘Interaction time’ (optional). To do that click on the ‘Reporting time = Conversion time’ button:

reporting time conversion time 1

You should now see an overlay on the right-hand side of your screen:

overlay

Interaction time: Use this setting if you want the model comparison report to include all touchpoints that happened with the date range you selected.

Conversion time: Keep this setting if you want the model comparison report to include only those touchpoints that lead to conversions and that happened with the date range you selected.

Note: By default, the model comparison report uses ‘conversion time’ as the reporting time.

Step-9: By default, the Model Comparison report shows data for all users. If you want to see data for another audience then click on the ‘Add filter’ button:

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Note: The ‘Add filter’ feature works just like the GA4 Comparisons feature.

Step-10: Select the primary dimension you want to use for your analysis from the data table (optional):

primary dimension model comparison

Let’s select ‘Source/medium’ as the primary dimension:

source medium primary dimension
source medium primary dimension 2

Step-11: Apply secondary dimension to your data table (optional). To do that click on the ‘+’ button next to the primary dimension drop-down menu:

secondary dimension model comparison

Step-12: Select a dimension that you want to use as the secondary dimension. Let’s select ‘Device Category’:

secondary dimension model comparison 2
device category

Step-13: Use the search feature on the reporting interface to filter out specific traffic sources (optional). Let’s filter out all the organic traffic sources. To do that type ‘organic’ in the search box and then press the enter key:

organic traffic sources

Step-14: Select the reference attribution model from the first attribution model drop-down menu:

first attribution model
first attribution model 2

Step-15: Select the comparison attribution model from the second attribution model drop-down menu:

second attribution model drop down menu

Let’s select the ‘Time decay model’:

second attribution model drop down menu 2
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Step-16: Click on the ‘<’ button to see the Model Comparison report in the full view mode:

full view mode
full view mode model comparison report 1

Step-17: Look at the % change column of the report:

percent change column
percent change column 2

From the screenshot above we can conclude that the Conversions from the Google Organic search on desktop devices are undervalued by -3.44% under the time decay model. Whereas the Revenue (i.e. sales) from the Google Organic search on desktop devices are undervalued by -3.03% under the time decay model.

That’s the kind of insight you can get from the model comparison report in GA4.

Model Comparison Report Navigation features

The Model Comparison report provides the following features for easy navigation:

#1 Search Box

search

Use the search box to filter out a specific set of data. To use the search functionality, type your search term and then press the enter key.

#2 Rows per page

By default, the data table of the Model Comparison report shows only 10 rows per page of the report. If you want to see more than 10 rows then click on the ‘Rows per page’ drop-down menu and select the desired number of rows to be displayed:

rows per page
rows per page2

Note: You can display up to 250 rows per page of the Model comparison report in GA4.

#3 Go to

If you want to quickly navigate to a particular row of the data table of the Model comparison report then type the row number in the text box next to ‘Go to’ and then press the enter key:

go to feature

#4 Pagination

The Model Comparison report has a pagination feature built-in through which you can navigate back and forth between various pages of the report:

pagination model comparison

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