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Table 2 Data sources for eCRF data variables and extraction methods using the ESR system

From: Evaluation of the clinical application effect of eSource record tools for clinical research

Research variable

Data sources

Source data record type

Extraction method

Subject information

Automatically generated by ESR

Structured

Field mapping

Date of visit

Outpatient medical records (visit time)

Structured

Field mapping

Signature of informed consent

Electronic informed consent/dialogue recording

Structured/sound

Field mapping

Population statistics

Outpatient medical records (demographics)

Structured

Field mapping

Facial aesthetic treatment

Outpatient medical records (past history)/dialogue recording

Free text/sound

Natural language processing

Vital signs

Outpatient medical records (physical examination)

Free text

Natural language processing

Physical examination

Outpatient medical records (physical examination)

Free text

Natural language processing

Digital photographs

Patient photo metadata

Image

Field mapping

Inclusion criteria

eCRF (inclusion criteria)

Structured

Clinician fills in manually in eCRF

Exclusion criteria

eCRF (exclusion criteria)

Structured

Clinician fills in manually in eCRF

Preliminary screening conclusion

Outpatient medical records (treatment plan)

Free text

Natural language processing

Final screening conclusion

Outpatient medical records (treatment plan)

Free text

Natural language processing

Past/concomitant drug therapy

Outpatient medical records (past history)/dialogue recording

Free text/sound

Natural language processing

Concomitant nondrug therapy

Outpatient medical records (past history)/dialogue recording

Free text/sound

Natural language processing