![]() ![]() ![]() The discrepancy in dummy use between SIDS cases and age matched control infants for the last sleep does not seem to be as marked among routine users this may indicate that infants are at greater risk of SIDS if they routinely use a dummy but have not been given their dummy on a particular night. Researchers in SIDS still need to determine what the protective mechanism might be, if it exists, or whether dummy use is a marker for something else. The discrepancy in dummy use has already been reported in previous larger studies, 2 - 4 with better ascertainment levels providing a more cautious interpretation of the data. As the authors point out in the discussion, a causal effect between dummy use and SIDS has not been established. However, projecting risk reduction or quantifying attributable risk in this study is inappropriate. Any calculation of attributable risk would be limited to the prevalence of exposure, which for dummy users in the Californian infant population would be 23% (based on the control data). ![]()
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