Prevalence risk ratio (PRR) and 95% Confidence Interval (negative binomial regression models) by deprivation risk group defined by distribution tertiles of the French EDI^ɣ weighted on the number of 8-year-old children residing in each block.

The first tertile (T1) is the least deprived and the 3rd tertile is the most deprived (T1 used as reference). Birth years 2000 to 2011.