math is an intervention

math is an intervention

…or at least home birth midwives must think it is, because they seem to have such difficulty with it.

MANA (midwives association of north america) had a voluntary survey to collect outcome data. They found a death rate for HBAC (home birth after cesarean)  of 5/1000, which is much much higher than comparable hospital birth. MANA did not understand that this is equivalent to 1/200, and denied it when it was pointed out to them. Here is what MANA had to say on their facebook page:

…[I]t does show a combined 5 deaths of 1000 (which is not the same as 1 in 200, since 1000 subjects were necessary to find those 5 deaths).

They deleted the post instead of correcting their error. Typical.

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