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Frequently Asked Questions

  1. Creating the study forms

    1. Should I use a Grid or a Repeated measure?
    2. How can I add new institutes?
    3. What are 'required' fields?
    4. How do I get an overview of my variables and option groups?
    5. See all 26 articles »
  2. Collecting data

    1. Can I change the values for missing data?
    2. Where can I review the audit trail?
    3. How can I verify data in Castor?
    4. Can I sort the reports in a certain order?
    5. See all 17 articles »
  3. Going live

    1. What does "going live" mean?
    2. How do I set my study to live?
    3. Can I still change the forms when my study is live?
    4. What happens if I reset randomization upon going live?
    5. See all 7 articles »
  4. Surveys

    1. What is the difference between surveys, survey packages and survey package invitations?
    2. Can surveys be filled in on site?
    3. Does Castor support surveys for participants of a study?
    4. How can I test a survey?
    5. See all 25 articles »
  5. Importing and exporting data

    1. Can I import existing data into Castor?
    2. What are the limits for importing data?
    3. Can I import reports into Castor?
    4. Can I import email addresses to which I will send surveys?
    5. See all 11 articles »
  6. Users and user rights

    1. Can I send an email to the users in my study?
    2. When are "manage records" rights necessary?
    3. What are user roles?
    4. How can I test data entry in a study which is not live yet?
    5. See all 4 articles »
  7. Automation Engine

    1. I want to show a phase or step instead of hiding it. How do I do that?
    2. Will changing the name of a phase affect the automations?
    3. Can I create automations based on randomization allocation?
    4. Troubleshooting: Why does my automation not work?
    5. See all 5 articles »
  8. Application Programming Interface (API)

    1. Can I use an Application Programming Interface (API) to access Castor?
    2. Is it possible to upload files with the API?
    3. Can I retrieve uploaded files through the API?
    4. Where can I find IDs for the study/field/report instance/... for the API?
    5. See all 13 articles »
  9. Troubleshooting

    1. API Troubleshooting
    2. After copying a step, all dependencies disappeared
    3. I use two-factor authentication and have a new device
    4. I created a record with a wrong record ID. Can I change it?
    5. See all 11 articles »
  10. Costs and payment

    1. When is my study free of charge?
    2. What payment methods are available for my study, and what will it cost?
    3. My study has more inclusions/lasts longer then expected. Now what?
    4. Is there a demo version of Castor available?
    5. See all 4 articles »
  11. Miscellaneous

    1. Can I work in Castor using other languages?
    2. Is there a data back-up in Castor?
    3. How can I migrate a study to another server?
    4. How do I cite Castor EDC in my paper?
    5. See all 6 articles »
  12. Advanced Castor features

    1. What is large file upload, and how do I add this feature to my study?
    2. What is metadata?
    3. How can I check my study statistics?
    4. Does randomization of test records affect the randomization in my study?
    5. See all 6 articles »