> There is good evidence Is there? How were the controls selected in that study? Were they from people who were called on the phone, meaning the controls were

> There is good evidence Is there? How were the controls selected in that study? Were they from people who were called on the phone, meaning the controls were from a group of people willing to talk to strangers about something as as deeply personal as having a child die of SIDS? In this study: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2351639/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2351639/ The controls were visited by the same home-visiting nurse, and it found no correlation.