How often are surgery dates cancelled

I am wondering how often they give you a date for surgery, you get the 'off work letter' and start the OPTI and then the surgery is cancelled or delayed?

I was told that at this point I am the first one on the OP schedule on January 29th, 2015 and my time might change. I took that to mean it would be later the same day

Any insight would be great

Thanks in advance.

I think no one can truthfully answer this because the variations of this answer are as vast as the colours at a pint store.

It wasn't my bariatric surgery..but two years ago I sat with an IV in my arm for 3 hrs only to have the surgeon come out 2 hrs after I was scheduled and tell me "it won't happen today as they woman ahead of you had some complications and it took longer than anticipated"

So it could be an emergency, a longer than usual surgery, an ill doctor or and emergency surgery at night that would push the morning OR times a bit back.  Try not to worry it all works out in the end

My date was changed twice.  Moved up a month and told to start Opti.  I was supposed to do Opti for 3 weeks but then they called on Friday of second week and said are you okay with Monday.  So I only had 2 weeks on Opti then surgery.