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Table 4 Number of publications for different evaluation processes

From: Diagnosis support systems for rare diseases: a scoping review

Evaluation Data driven Knowledge-based Hybrid
Comparison to other methods 15 studies 9 studies 4 studies
Comparison to other tools 1 study 8 studies 3 studies
Comparison to experts 3 studies 1 study 1 study
External validation 8 studies 8 studies 2 studies
Method for imbalance issue 2 studies 0 studies 0 studies
Total 29 studies 19 studies 13 studies
  1. The number of studies is specified for each evaluation process according to the type of knowledge included. External validation is only specified in 18 studies, and a specific method to address imbalance issues is only specified in two studies