The absolute majority of Ukrainians - 78% - have close relatives or friends who were injured or killed due to the Russian invasion. Among those who have such close relatives or friends, the average number (the median value was used) was 7. That is, on average, such respondents have 7 close relatives or friends who were injured or killed.
Herewith:
64% of Ukrainians have at least one close relative or friend who was injured (on average, have 5 injured close people),
and 63% have at least one close relative or friend who died (on average they have 3 deceased loved ones).
Press releases and reports - How many Ukrainians have close relatives and friends who were injured / killed by the Russian invasion: results of a telephone survey conducted on May 26 - June 5, 2023
Ukrainian casualty figures have been a state secret, and public estimates have been all over the map. A BBC version of the Teixeira Pentagon leaks showed approximately about 14,000 Ukrainian KIA as of February 28; another version of a similar document showed about 70,000 Ukrainian KIA as of March 1. RFK, jr has quoted a figure of 300,000 KIA.
Is it possible to see if the figures from the Kyiv International Institute of Sociology provide some insight as to what numbers are closest to the truth?
A basic question is how many deaths would be required to reasonably give the figures from the Kyiv Institute. A starting point is the look a similar survey where the number of deaths is also known.
Here are some figures I found related COVID deaths in the US from a survey done between March 2 an April 4, 2022. The number of US COVID deaths was just over 1 million at the time of the study. Here is an excerpt from the study:
Overall, 40% of adults in our survey knew at least one person who died of COVID-19. One in five adults (20%) knew one person, 13% knew two people, and 7% knew three people or more who died from the coronavirus. Among these 40% were 15% who lost a family member, 18% who lost a neighbor, 4% who lost a co-worker, and 14% who lost an acquaintance. (These numbers do not sum to 40% because many individuals indicated losing more than one category.)
COVID-19 deaths and depression | The COVID States Project
Working back from these numbers, each COVID death had to be reported as “friend or family” by 230 people. (The figure assumes the entire population is a respondent. If only adult population is considered, the number of the number of responses per respondents would go up but the number of respondents would go down by an offsetting amount.)
In the KIIS study, there were 189 reported deaths per 100 respondents. (63 % of respondents have lost loved ones with and an average of 3 deaths each.)
There were 37,500,000 people in Ukraine without Crimea and the DPR and LHR at the end of 2021 according to data in Wikipedia. Since then 8,500,000 refugees have left Ukraine and about another 3 million live under the control of Russia. That leaves a population of about 26 million.
The number of Ukrainians who have died in the war would then be:
26 million x (189 reports/100 respondents) / 230 (reports/death) = 213,000 deaths
If we eliminate deaths for “acquaintances” in the US study, the number of reports would drop to only 170 reports per death. The death figure would rise to over 300,000.
In order for the lowest leaked numbers to be correct, several thousand people would have to report each death as being from a “close family member or friend”. That sounds highly dubious.