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Table 1 Summary of data composition

From: Mobile electronic versus paper case report forms in clinical trials: a randomized controlled trial

  CRF entry method
eCRF pCRF
Total number of records 60 60
Records per subject type   
 Patient 45 45
 Study nurse 15 15
Records per instrument   
 Patient and medical history 6 6
 Examination at first visit 3 3
 Examination at second visit 6 6
 VASa freezing 5 5
 Nutrition questionnaire 5 5
 IPAQb 5 5
 SF-36c 5 5
 Chronotype questionnaire 5 5
 Nutritional habits 5 5
 Test meal questionnaire 15 15
  1. Equal numbers of records were obtained for each CRF, subject and instrument type. Differences in record numbers between items were owed to the design of the use case study and controlled for in the statistical model
  2. avisual analogue scale
  3. binternational physical activity questionnaire
  4. cshort form (36) health survey