Uhhh I think this is really misleading. This appears to be the abstract for the study referenced:
http://pediatrics.aappublications.org/content/early/2012/09/04/peds.2011-3467
Maybe there are details within the full text (which I don't have access to, I'd really like to read it) that would clarify some points but what it sounds like is, they had 2 groups. One group received sleep advice, the other group didn't. It's not at all clear that one group practiced CIO and the other group didn't -- it sounds more like both groups did whatever they wanted, but one received more advice/training on CIO-type techniques. This doesn't necessarily mean they USED those techniques, and it doesn't sound like the control group necessarily DIDN'T use those techniques, they just weren't specifically trained in them. They may have been comparing apples to apples, for all we know.
And there are articles showing CIO to be harmful. Those can't just be thrown out the window based on one (possibly poorly-designed) study.
Here's the first study they did:
http://pediatrics.aappublications.org/content/122/3/e621.abstract
It really sounds like they are just studying the effectiveness & ramifications of a nurse spending 1-3 hours with these families talking about sleep interventions. I don't understand where the papers are getting "CIO isn't harmful."
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