This may be best available but it's not very good- imputing data on drug and alcohol consumption (the original studies having not collected this data) and excluding male infants from the control and as you say not controlling for intensity of breastfeeding. All of these factors have a big impact on SIDS risk and make it impossible to draw any conclusions about the risk of SIDS where an infant is exclusively breastfed, regardless of gender and where there is no parental alcohol or other drug consumption.
Karleen Gribble
Australia
> 
> 

> 
> <replying> 
> 
> The best available evidence on the effect of bedsharing in breastfeeding mums is http://bmjopen.bmj.com/content/3/5/e002299.full , which looked specifically at the risk in breastfeeding mums when allowing for other risk factors, and still found an increase in SIDS risk for young babies who bedshare as compared to room sharing. It didn't control for amount of breastfeeding, but it's hard to see why that would make enough of a difference to eliminate all risk. 
> 
> (Obviously, at this point you're talking about extremely small absolute risks anyway; I don't agree with the 'never bedshare' conclusion that the authors of the article have reached. However, the evidence clearly doesn't support bedsharing being something we should advocate as protective against SIDS.)
> 
> 
> Best wishes,
> 
> Sarah
> 
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