“Sleep Environment Risks for Younger and Older Infants” (Colvin et al, Pediatrics 2014-0401) fails to add any useful information to the sudden infant death syndrome (SIDS)/infant mortality dialogue. Like many other articles on sleep-related risks, this article lacks clear, unambiguous definitions of critical variables, omits significant documented risk factors, and conflates SIDS and other unrelated forms of infant death, drawing conclusions that the data do not support.

Specifically: (1) The bed-partner could be human or animal, drunk or sober, smoker or not, adult or child, caring mother or inattentive other. An infant sleeping with an inebriated uncle is different from an infant sleeping next to his sober breastfeeding mother. (2) “Adult bed” included adult bed, waterbed, adult mattress, bunk bed, child’s bed, sofa bed, and air mattress. (We can only presume that sofas and recliners are included. They are common shared-sleep choices, especially for mothers who have been told their...

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