The aORs of receiving ADHD medication in relation to IMD decile were: 0.90 (95% CI, 0.85–0.97; P = 0.004) assuming CYP with missing data were receiving medication for ADHD, and 0.94 (95% CI, 0.89–0.99; P = 0.024) assuming those CYP with missing data were not receiving medication for ADHD. Here, PPIG is linked to attention deficit-hyperactivity disorder.