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Table 3 Reported reasons for non-enrollment of EHR-identified patients and by % of total trial participants identified through EHR screening

From: The use of electronic health records for recruitment in clinical trials: a mixed methods analysis of the Harmony Outcomes Electronic Health Record Ancillary Study

Reason for non-enrollment % of total participants identified through EHR screening
Overall (N = 214)* 0–10% (n = 84) 11–30% (n = 71) > 30% (n = 59) P-value
Patient refusal 69.6 71.4 71.8 64.4 0.59
Some trial criteria could not be queried or were not included in the EHR search, and the patient is ineligible 65.0 67.9 70.4 54.2 0.12
Provider deems patient inappropriate for trial 45.8 42.9 47.9 47.5 0.79
Patient is cared for by another provider 36.0 44.0 26.8 35.6 0.08
Patient does not have an upcoming clinic visit 30.8 28.6 32.4 32.2 0.85
  1. EHR, electronic health record
  2. *Counts are the number of respondents who selected “a moderate amount,” “a significant amount,” or “a very significant amount” for each reason why patients enroll within each percent enrolled category. The “other” category was taken from question 18. The results are presented for those that answer “yes” to question 18a