Normalizing Eligibility Criteria |
1- The number of free-text eligibility criteria, and their complexity; 2- The terminologies and syntax that have been used to represent eligibility criteria; 3- The concordance between the original free-text eligibility criteria and the final computable criteria; 4- The quality of the mapping, i.e., the proportion of concepts that have been successfully mapped; 5- If human expertise is necessary at each step of the process and how it could affect the results; |
Time Issue |
6- How often the EHR has been queried and for what period of time; |
Structured Data Completeness of EHR |
7- The completeness of the database(s) for each eligibility criterion, i.e. is the data available and for what proportion of patients? 8- If the platform was used to query structured data, unstructured data or both; 9- How the issue of data completeness has been managed: not managed, with scoring, Bayesian network, free text mining using natural language processing tools… |