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Table 2 Eligibility criteria distribution according to semantic categories

From: Evaluation of data completeness in the electronic health record for the purpose of patient recruitment into clinical trials: a retrospective analysis of element presence

  Luo et. al.       This research
  [%] [%] n
Health Status 43.72 45.04 318
 Disease, Symptom and Sign 29.21 22.52 159
 Pregnancy-related activity 5.17 5.24 37
 Neoplasm status 3.67 3.40 24
 Disease stage 2.20 2.27 16
 Allergy 2.15 5.95 42
 Organ or tissue status 0.73 5.38 38
 Life expectancy 0.59 0.28 2
Treatment or Health Care 20.74 17.56 124
 Pharmaceutical substance or drug 12.84 7.37 52
 Therapy or surgery 7.61 10.20 72
 Device 0.29 - 0
Diagnostic or lab test 14.85 19.41 137
 Diagnostic or lab results 14.63 19.41 137
 Receptor status 0.22 - 0
Demographics 8.79 4.67 33
 Age 5.91 2.69 19
 Special patient characteristic 1.18 0.42 3
 Literacy 0.65 0.28 2
 Gender 0.41 1.27 9
 Address 0.35 - 0
 Ethnicity 0.29 - 0
Ethical Consideration 8.52 8.64 61
 Consent 2.76 2.55 18
 Enrolment in other studies 2.38 1.27 9
 Capacity 1.50 3.54 25
 Patient preference 1.38 0.57 4
 Compliance with protocol 0.50 0.71 5
Lifestyle Choice 3.38 1.56 11
 Addictive behaviour 2.09 1.42 10
 Bedtime 0.47 - 0
 Exercise 0.44 - 0
 Diet 0.38 0.14 1
no fitting category - 3.12 22
  1. Detailed legend: Distribution of the 706 patient characteristics from 15 clinical trials according to the semantic categories developed by Luo et al. and comparison with the distribution obtained by Luo et al. for 4821 eligibility criteria.