title: Limitations of the Nash Logoscope or diagnostic slide rule.
abstract: The diagnostic efficacy of a commercially available diagnostic slide-rule (the Logoscope) was evaluated on 50 cases detailed in the leterature. In only 13 cases (26%) was the Logoscope of any practical assistance in diagnosis and even then it did not always indicate the entire final clinical diagnosis. Some major deficiencies of the Logoscope system are outlined.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003933:Diagnosis; D003937:Diagnosis, Differential; D005194:Family Practice; D005260:Female; D006801:Humans; D008297:Male; D013677:Medical Laboratory Science / Q000295:instrumentation*; D008511:Medicine; D008875:Middle Aged; D013038:Specialization; D013997:Time Factors