All articles included in the study are listed in Additional file 2. The categorization of the literature shows that more than 60% of the 536 articles using the term "virtual patient" originate from the healthcare education domain.
In both cases, concepts, i.e. distinct entries in a controlled vocabulary, are used for the annotation (also called classification and categorization depending on the context) of literature and experiments.
A categorization of the studies in the literature review is presented in Table 2.
Review of literature and secondary analysis of outcomes based on categorization of English-language reports published between January 1975 and October 2013 into the ITC framework.
In particular, these findings add to the literature on the categorization of group memberships that are not perceptually obvious, such as sexual orientation [11] and religious group membership [14], [19].
No uniform categorization of hospital volume exists in the literature, so the cut-off points for the different hospital volume groups were chosen arbitrarily.
This approach along with a comprehensive literature review enables a categorization of the existing numerical methods, which are shown to be closely related.
PT conducted the systematic literature review, selection and categorization of cases, data extraction, data analysis, writing of the manuscript, and is guarantor.
The degree of membership has a straightforward equivalent in the categorization literature, namely the typicality of the exemplars of a category [16], [26], [27].
Ever hear of "literature"?
