Raquel Gil?Gouveia|António G. Oliveira|Isabel Pavão Martins
A subjective cognitive impairment scale for migraine attacks. The MIG-SCOG: Development and validation
University of Lisbon|Hospital da Luz|Universidade Nova de Lisboa|University of Lisbon
burden migraine determined impairment attacks due pain nonpainful symptoms cognitive symptomsdevelopment questionnaire measure selfreported subjective cognitive symptoms migraine attacksitem generation accomplished structured patient interviews analysed panel experts set 43 candidate items applied consecutive migraine patients test construction factor analysis retained nine items internal consistency assessed cronbachs alpha spearmans rho convergent construct validity correlation spontaneous cognitive complaints 43item cognitive failures questionnairesthe nineitem migscog covers two domains executive functions language cronbachs alpha 082 correlates spontaneous cognitive complaints p 0001 43item rho 069 cognitive failures questionnaires rho 061 testretest reliability cohens kappa 055migscog valid reliable consistent working instrument fast selfadministration quantifies subjective cognitive symptoms migraine attacks