Epidemiology

The worldwide prevalence of ODD in children up to the age of 18 years is estimated to be approximately 3% to 4%.[17][18][19][20]

Although one study has demonstrated a difference in prevalence rates in boys compared with girls (1.6:1.0), this has not been replicated in other studies.[9][21] Over time, and particularly into adolescence, it is thought that boys and girls are equally affected.

There are no robust population prevalence data for adults with ODD.

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