> A screening program a year later in 2012 found that more than a third (36%) of children in Fukushima Prefecture have abnormal growths in their thyroid glands.

> A screening program a year later in 2012 found that more than a third (36%) of children in Fukushima Prefecture have abnormal growths in their thyroid glands. As an aside, what is the base rate? In all the reporting on this number I've not been able to find it. (Only that the base rate among adults is around 50%, which may or may not be comparable.)