he said the numbers were so small
 (SIDS cases who were breastfed and who had a parent who smoked
 was a small subset of the cases, and then dividing these into
 bed-sharers and non-bed-sharers produced two even smaller
 subsets) that they were too small to form the basis of a risk
 calculation.

Perhaps this is a cultural difference between that area and the area in
which I now work.  Is smoking itself very rare in that area?  Is it an
economically related variable?  Is there another area where the data
could be found?  What size study population is needed in order to obtain
this necessary information for parents?

Arly Helm, MS, IBCLC

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