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Accepted for/Published in: Journal of Medical Internet Research

Date Submitted: Jan 31, 2020
Date Accepted: May 14, 2020
Date Submitted to PubMed: May 27, 2020

The final, peer-reviewed published version of this preprint can be found here:

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

Vuorinen AL, Erkkola M, Fogelhom M, Kinnunen S, Saarijärvi H, Uusitalo L, Näppilä T, Nevalainen J

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

J Med Internet Res 2020;22(7):e18059

DOI: 10.2196/18059

PMID: 32459633

PMCID: 7392131

Warning: This is an author submission that is not peer-reviewed or edited. Preprints - unless they show as "accepted" - should not be relied on to guide clinical practice or health-related behavior and should not be reported in news media as established information.

Per the author's request this version is not available.