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 *********************************************** To temporarily stop your subscription: set lactnet nomail To start it again: set lactnet mail (or digest) To unsubscribe: unsubscribe lactnet All commands go to [log in to unmask] The LACTNET mailing list is powered by L-Soft's renowned LISTSERV(R) list management software together with L-Soft's LSMTP(TM) mailer for lightning fast mail delivery. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html