CNN Anderson Cooper 360 March 21, 2013 00:19:00
Them about autism. and its a phone survey versus an actual medical record. now, those can be good studies, but, again, very difference -- little like comparing apples to oranges here. >> can you expect accuracy from a survey conducted over the phone? >> you know, you can get pretty good accuracy. but i looked at the study pretty carefully. and what you find is that with this particular survey, only about 23 to 25% of parents responded. now, if you think about that -- parents are more likely to r...
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