Prevalence and comorbidity of attention deficit hyperactivity disorder in Spain: study protocol for extending a systematic review with updated meta-analysis of observational studies.

Ferrán Catalá-LópezManuel RidaoAmparo Núñez-BeltránRicard Gènova-MalerasAdolfo Alonso-ArroyoRafael Aleixandre-BenaventMiguel A CataláRafael Tabarés-Seisdedos

Published in: Systematic reviews (2019)

PROSPERO CRD42018106082 .

Keyphrases

attention deficit hyperactivity disorder
systematic review
autism spectrum disorder
meta analyses
risk factors
working memory
case control
randomized controlled trial