Guest guest Posted July 14, 2012 Report Share Posted July 14, 2012 Self reported RETROSPECTIVE studies are the MOST LIKELY to be misleading. Breastfeeding mothers are MORE likely to pay attention to their babies diets and reactions to foods. Furthermore, you don't know which came first, the allergy or the breastfeeding. Babies who might reject food because they are allergic might breastfeed longer. Why would anyone submit such a poor study design? Why would any peer-reviewed journal print such a poorly designed study? Now, the thing that recently really pissed me off was taking one of those practice exams for the upcoming IBLCE test. The correct response to one of those answers was " PROVES the null hypothesis " for a question about a high p-value. This is why the news media and health care practitioners who dabble in studies are dangerous. A high p-value PROVES nothing. A too small sample size can get you a high p-value even when you have very significant substantial real effects. Sigh. Best regards, E. Burger, MHS, PhD, IBCLC Quote Link to comment Share on other sites More sharing options...
Guest guest Posted July 14, 2012 Report Share Posted July 14, 2012 Sing it ! Lea Quote Link to comment Share on other sites More sharing options...
Guest guest Posted July 15, 2012 Report Share Posted July 15, 2012 My thoughts exactly ! Cole Quote Link to comment Share on other sites More sharing options...
Guest guest Posted July 16, 2012 Report Share Posted July 16, 2012 Sharon: Numbers don't matter if the initial selection criteria are not specific and well defined. Reasoning like your own is far more important. Questioning the basic assumptions. Considering other explanations. This is what is far more important than p-values. And yes, there are other studies that show higher rates of allergies among breastfed infants. My advisor reamed one student and the authors of the study the student presented for being so blinded to their preconceived notions of the outcome of the study that no one read their tables. The tables showed that SYMPTOMS of allergies were more severe among breastfed infants. Again, this was a study of self-reported symptoms. Bests, Quote Link to comment Share on other sites More sharing options...
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