The title is a bit misleading, as Yucatan births are discussed the most, while the others are used as a comparison in another chapter. Probably the most depressing thing about this book was how, even though it was written in the 1970s, there was evidence that a doula, or even a silent observer, can improve birth outcomes. Hospital practices and evidence-based practices are and have been two different things for over forty years! I think some things have changed since this book was written--for instance, there isn't a separate delivery room that women need to be moved into in hospitals these days, but at the same time, hardly anything has changed.
The chapter where Jordan described a birth in the US where the doctor talked to the laboring woman through the nurse (and had to give permission for her to start pushing) was really sad to me. How does a woman have no authoritative knowledge over her own body/birth? I hope the doctor attending my birth talks to me and over me.
There was some information about how teaching Western birth practices to Yucatanean midwives wasn't all that helpful (other than telling them what they "should" be doing), which I didn't find quite as relevant to my interests, but I still read it, being a student of the social sciences. This book is somewhat dated, but feels historically relevant, and provides a review of good anthropology practices (interviewing is insufficient!).