Table 7 Categories of contextual characteristics for explaining these contradictions

From: Towards medical knowmetrics: representing and computing medical knowledge using semantic predications as the knowledge unit and the uncertainty as the knowledge context

  Category Topic No
Category—1 Heterogeneity in study design 1, 3, 8, 9, 16, 18, 21, 22, 23, 24, 25
Category—2 The contradiction of observational studies and RCTs 2, 20
Category—3 Research settings or Real word Settings 4, 5
Category—4 Cost-effectiveness 6, 12, 13, 17
Category—5 Short-term outcome 11
Category—6 Publication bias, citation bias and time-lag bias 14
Category—7 Inaccuracy of SemRep 3