We evaluated compliance with submitting a short Web-based personal behavior survey daily during a 10-week study (n = 52 women/3419 diaries). Time-stamped forms revealed that 50% of diaries were submitted within 24 hours of the email prompt, and 19% were missing or submitted more than 3 days late. Late submissions may affect data quality.
SummaryIn a longitudinal study requesting daily online completion of short personal behavior diaries, 19% of surveys were missing or submitted over 3 days late. Delayed submissions may indicate recall bias.
From the *Institute for Genome Sciences,
†Department of Epidemiology and Public Health, University of Maryland School of Medicine;
‡University of Maryland, Faculty Physicians Inc.;
§Department of Diagnostic Radiology and Nuclear Medicine; and
¶Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
Conflicts of interest: None declared.
Research reported in this publication was supported by the National Institute of Allergy and Infectious Disease grant R01-AI119012 (PI: Brotman).
Correspondence: Rebecca M. Brotman, PhD, MPH, Department of Epidemiology and Public Health Institute for Genome Sciences, University of Maryland School of Medicine HSF-III 670 West Baltimore St., Rm 3175 Baltimore, MD 21201. E-mail: email@example.com.
Received for publication September 21, 2018, and accepted March 12, 2019.
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Online date: March 18, 2019