I read the study in Russian (but I did not read the article referenced in the post).
The only number I found there is that to the question “sometimes conflicts in a family cause physical violence” 4% of women answered that this happened in their family and 21% of women said that this happened in their environment.
The study also analyses what people consider as a domestic violence as such, for example many consider “requirement to show SMS/social chat” as a violence - so this term could be wider than one thinks.