Annals of Dyslexia

, Volume 61, Issue 1, pp 1-20

First online:

Multivariate predictive model for dyslexia diagnosis

  • Guylaine Le JanAffiliated withINSERM, U 642Université de Rennes 1, LTSI
  • , Régine Le Bouquin-JeannèsAffiliated withINSERM, U 642Université de Rennes 1, LTSI Email author 
  • , Nathalie CostetAffiliated withINSERM, U 642Université de Rennes 1, LTSI
  • , Nolwenn TrolèsAffiliated withUniversité de Rennes 2, CRPCC
  • , Pascal ScalartAffiliated withIRISA/ENSSAT
  • , Dominique PichancourtAffiliated withService MPR Pédiatrique du Centre Hospitalier Lannion-Trestel
  • , Gérard FauconAffiliated withINSERM, U 642Université de Rennes 1, LTSI
  • , Jean-Emile GombertAffiliated withUniversité de Rennes 2, CRPCC

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Dyslexia is a specific disorder of language development that mainly affects reading. Etiological researches have led to multiple hypotheses which induced various diagnosis methods and rehabilitation treatments so that many different tests are used by practitioners to identify dyslexia symptoms. Our purpose is to determine a subset of the most efficient ones by integrating them into a multivariate predictive model. A set of screening tasks that are the most commonly used and representative of the different cognitive aspects of dyslexia was proposed to 78 children from elementary school (mean age = 9 years ± 7 months) exempt from identified reading difficulties and to 35 dyslexic children attending a specialized consultation for dyslexia. We proposed a multi-step procedure: within each category, we first selected the most representative tasks using principal component analysis and then we implemented logistic regression models on the preselected variables. Spelling and reading tasks were considered separately. The model with the best predictive performance includes eight variables from four categories of tasks and classifies correctly 94% of the children. The sensitivity (91%) and the specificity (95%) are both high. Forty minutes are necessary to complete the test.


Diagnosis Dyslexia Logistic regression Multivariate analysis Predictive model