https://www.buckeyefirearms.org/myth-3-25-million-defensive-gun-uses-each-year-cant-be-accurate
https://www.heritage.org/data-visualizations/firearms/defensive-gun-uses-in-the-us/
The jury is still out on DGU as past studies need more refinement. Like all research and attempts to draw conclusions based on statistical data, there is room for disagreement in how the questions are asked, how the sampling was done and what are the inherent biases of the people doing and/or sponsoring the research project.
I have known, worked with and associated with a lot of people over the years and am not aware of a single DGU case. Now maybe those people were generally less likely to be involved in such a situation but I acknowledge that its still possible that the occurrence of DGU events may be quite high in this country.
We need better data before we can reach any conclusions IMO.
Thanks for providing the links.