Thank you for posting this. Very interesting information. This is a debate that needs to be aired more with this kind of information being part of it.
However, I do think the study might be skewed a bit by the fact that self-reporting parents may be more motivated in health affairs overall. When you compare this to data collected by doctors there is a slight skew.
It would be great to see this kind of study done with less self reporting. But I understand how little help we can get from the medical profession in doing proper documentation of unvaccinated children's health.