Im lazy and give up trying to find what percentage of a group of people have utis as some kinda control but
62,274 people reported to have side effects when taking Ambien.
Among them, 2,005 people (3.22%) have Urinary tract infection
What this doesnt tell us is
1. If this was a controlled study what percentage of people who happened to get utis independently of ambien.
2. Since this is a group of only people who reported side effects that may drastically skew the percentages as someone who didnt have side effects isnt included.
For example say
10,000,000 people take ambien
9,000,000 get zero side effects
Out of the 1,000,000 only
100,000 report the side effects
3,000 report uti
So we only know that 100,000 have a 3,000 report a uti this can make a large amount of bias from what i vaguely remember you can lookup problems with self reported surveys , population, bias, and samples
Lastly we dont know how long they have been taking ambien for all we know they have been on it for years and at some point in time they had a uti which is very common to occur at some point in time even without ambien