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Paper- or Web-Based Questionnaire Invitations as a Method for Data Collection: Cross-Sectional Comparative Study of Differences in Response Rate, Completeness of Data, and Financial Cost

Paper- or Web-Based Questionnaire Invitations as a Method for Data Collection: Cross-Sectional Comparative Study of Differences in Response Rate, Completeness of Data, and Financial Cost

Additionally, longer delivery time (up to 8 days) and fewer post offices may also imply that many Danes now tend to check their physical mailbox less often (M Christensen, email communication, June 5, 2017 and [7,8]).Data collection by paper questionnaire with

Jonas Fynboe Ebert, Linda Huibers, Bo Christensen, Morten Bondo Christensen

J Med Internet Res 2018;20(1):e24