Here you can find a summary of what changed in each wave of GWI Core Plus, including any key updates that could impact your analyses.
For a broader overview of the GWI Core Plus data set — including methodology, coverage, and key features — visit our Understanding GWI Core Plus article, where you can also download the questionnaire for the latest wave.
Q3 2025
Q3 2025
Updates to GWI Core Plus Q3 2025 include:
We’ve included new brands, specifically in the nailcare and stomach pain treatment categories.
We’ve updated coverage on over 65 year olds across France, Germany, Italy, and Spain.
The addition of 65+ in these markets naturally led to some shifts in behavior compared to previous waves — for example, increases in watching traditional TV channels, listening to classic radio stations, reading printed newspapers, prefering long-life milk and dark chocolate, and reporting higher use of dental or eye care products.
If your analysis compares waves without 65+ respondents to those that include them, you may want to exclude this age group for consistency; learn more in this Help Center article.
Q1 2025
Q1 2025
Additions to GWI Core Plus for Q1 2025 include:
A new question on Types of Foot Care Products
We have also split out "Smoke cigarettes or other tobacco products" into "ready-made cigarettes" and "rolling tobacco" to better reflect industry segmentation.
Click here to see this wave of GWI Core Plus on the platform.