The number of children receiving care and support whose own substance misuse was identified as a problem was 630, representing 3.8 per cent of all children receiving care and support.
Nifer y plant sy'n derbyn gofal a chymorth y nodwyd bod eu camddefnyddio sylweddau eu hunain yn broblem oedd 630, sef 3.8 y cant o'r holl blant sy'n derbyn gofal a chymorth.