Abstract: Methods, systems, and apparatus, including medium-encoded computer program products, for creating an indication of brain condition include: receiving first information concerning a person, the first information indicating presence or absence of markers for an aspect of an assessment performed for the person, the aspect occurring at least twice at respective portions of the assessment; generating an indication of brain condition for the person by comparing the first information with second information concerning a group of people for whom the assessment has been performed, where the comparing includes checking a conditional probability of finding the marker present for the aspect of the assessment in one of the portions of the assessment when the marker is present for the aspect in another of the portions of the assessment; and outputting the indication of brain condition for the person.