You probably read it in all the recent trash that has been quoted in the papers lately. It's not true at all. The ob who said is quoting birth centre transfers rates saying "50% of first time mothers transfer to hospital" when discussing HB. 50% of first time mothers who are home birthing do not transfer. IMs have their transfer rates and it is less than this.
Ah. I was wondering about that. I heard the KEMH BC has a 50%-ish transfer rate and wondered if someone had their wires crossed.