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New Methods (944) Electronic/Mobile Data Capture, Internet-based Survey & Research Methodology (832) Innovations and Technology for Healthy Eating Education (414) Validity, Reliability, and Bias (93)

Published on in Vol 22, No 7 (2020): July

Preprints (earlier versions) of this paper are available at https://preprints.jmir.org/preprint/18059, first published .
Characterization and Correction of Bias Due to Nonparticipation and the Degree of Loyalty in Large-Scale Finnish Loyalty Card Data on Grocery Purchases: Cohort Study

Characterization and Correction of Bias Due to Nonparticipation and the Degree of Loyalty in Large-Scale Finnish Loyalty Card Data on Grocery Purchases: Cohort Study

Characterization and Correction of Bias Due to Nonparticipation and the Degree of Loyalty in Large-Scale Finnish Loyalty Card Data on Grocery Purchases: Cohort Study

Authors of this article:

Anna-Leena Vuorinen1, 2 Author Orcid Image ;   Maijaliisa Erkkola3 Author Orcid Image ;   Mikael Fogelholm3 Author Orcid Image ;   Satu Kinnunen3 Author Orcid Image ;   Hannu Saarijärvi4 Author Orcid Image ;   Liisa Uusitalo3 Author Orcid Image ;   Turkka Näppilä5 Author Orcid Image ;   Jaakko Nevalainen1 Author Orcid Image
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