The only numbers out there on UC
include ALL unattended births, such as precipitous births, dumpster babies, and any birth that occurred outside the hospital and in the absence of a professional birth attendant.
Unattended births in studies always
includes ALL unattended births, including roadside deliveries, precipitous births, dumpster babies, etc etc..
Instead of excluding the high risk
births from both groups, they
include the homebirth outcomes of premature
births at 34 - 37 weeks gestation (13 - 17) breech and twins (13,14) lethal anomalies incompatible with life (13,14)
unattended homebirths (15,16) unplanned homebirths (15,16) or women who became risked out of homebirth by becoming high risk at the end of pregnancy, had hospital
births, but are
included in the homebirth group.