Pamela -

I *believe* that the apparent increase in SIDS risk with co-sleeping in the
New Zealand study stems from the fact that co-sleeping is a cultural norm
with some, not all, of the groups studied.  Those groups that traditionally
sleep with their children (and which therefore contribute a
disproportionately large number of co-sleepers to the study) also have
higher rates of smoking.  Don't know about their breastfeeding rates.  When
you control for other known or presumed risk factors, the apparent
connection with co-sleeping disappears.

Do I have this right, anyone?

Diane Wiessinger, MS, IBCLC, LLLL  Ithaca, NY