Psychiatric comorbidities of attention deficit/hyperactivity disorder in Japan: a nationwide population-based study.

ABSTRACT:

Introduction

This study aimed to estimate prevalence and incidence of attention deficit/hyperactivity disorder (ADHD) and comorbid relationships between ADHD and other psychiatric disorders in Japan.

Methods

Using the real-world JMDC Claims Database, we conducted a cross-sectional study (analysis years 2017-2021) and retrospective cohort study (observation 2 years before/after the initial ADHD diagnosis; data collection 2005-2021; enrollment 2017-2019). Patients were male or female, aged 0-57 years. Cross-sectional study patients had an ADHD or other psychiatric disorder diagnosis (with or without medication) and were continuously registered in each analysis year; retrospective study patients had an ADHD diagnosis and ≥2 years' observation before and after diagnosis. Endpoin

SUBMITTER: Okada T 

PROVIDER: S-EPMC11541049 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature