I asked the kidney donors who took the survey where their surgery and their recipient's surgery took place. The majority of surgeries took place in the US, with 37 states represented. 5% of the respondents donated outside of the US.
If both kidneys function equally, surgeons usually prefer to take a donor's left kidney. The survey data is consistent with that, but when I shared the breakdown of the left vs. right kidney donors I learned that this choice could have long term impacts on the donor's health.
The living kidney donor survey included 125 questions in total and took an average of 16 minutes to complete. I have attached a PDF of the full survey for anyone who is curious about what was asked and how things were phrased
In the survey, I asked a number of questions about the out-of-pocket costs associated with becoming a living donors.