Study into the Impact of Nutrition on Children with Attention-deficit hyperactivity disorder - ADHD (INCA Study)

  • L.M. Pelser (Creator)
  • Klaas Frankena (Creator)
  • J. Toorman (Creator)
  • Huub Savelkoul (Creator)
  • R. Dubios (Creator)
  • R. Rodrigues Pereira (Creator)
  • T.A. Haagen (Creator)
  • N.N. Rommelse (Creator)
  • J.K. Buitelaar (Creator)



Protocol and data INCA trial
The file INCAdata.csv contains the data collected during the INCA study (100 records with 152 variables). The data have been analysed and outcomes were published by Pelsser et al (2011): "Effects of a restricted elimination diet on the behaviour of children with attention-deficit hyperactivity disorder (INCA study): a randomised controlled trial." The Lancet 377: 494-503 (doi:10.1016/S0140-6736(10)62227-1).
Further explanation of the variable abbreviations is in the file INCAvar.csv while the coding of categorical variables is in the file INCAvarcode.csv.
Also the registered study protocol (see also: can be downloaded.
Date made available14 Aug 2012
PublisherWageningen UR
Temporal coverage4 Nov 2008 - 29 Sept 2009
Date of data production29 Sept 2009
Geographical coverageThe Netherlands, Belgium


  • attention deficit hyperactivity disorder (ADHD)
  • elimination diets
  • nutrition and health
  • behaviour disorders
  • children
  • child nutrition

Cite this