Survey response over 15 years of follow-up in the Millennium Cohort Study

BMC Medical Research Methodology

Research

Xin M. Tu¹  Rudolph P. Rull²  Jennifer N. Belding²  Sheila F. Castañeda²  Toni Rose Geronimo-Hara³  Claire A. Kolaja³  Beverly D. Sheppard³  Jennifer L. Walstrom³  Satbir K. Boparai³  Teresa M. Powell⁴ 

[1] Clinical and Translational Research Institute, University of California San Diego, San Diego, CA, USA;Deployment Health Research Department, Naval Health Research Center, San Diego, CA, USA;Deployment Health Research Department, Naval Health Research Center, San Diego, CA, USA;Leidos, Inc, San Diego, CA, USA;Leidos, Inc, San Diego, CA, USA;Army Resilience Directorate, Headquarters United States Department of the Army, Deputy Chief of Staff G-1, Arlington, VA, USA;

关键词: Follow-up surveys;    Cohort study;    Military;    Longitudinal;    Response rates;   

DOI  :  10.1186/s12874-023-02018-z

 received in 2023-03-31, accepted in 2023-08-09,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundPatterns of survey response and the characteristics associated with response over time in longitudinal studies are important to discern for the development of tailored retention efforts aimed at minimizing response bias. The Millennium Cohort Study, the largest and longest running cohort study of military personnel and veterans, is designed to examine the long-term health effects of military service and experiences and thus relies on continued participant survey responses over time. Here, we describe the response rates for follow-up survey data collected over 15 years and identify characteristics associated with follow-up survey response and mode of response (paper vs. web).MethodPatterns of follow-up survey response and response mode (web, paper, none) were examined among eligible participants (n=198,833), who were initially recruited in four panels from 2001 to 2013 in the Millennium Cohort Study, for a follow-up period of 3–15 years (2004–2016). Military and sociodemographic factors (i.e., enrollment panel, sex, birth year, race and ethnicity, educational attainment, marital status, service component, service branch, pay grade, military occupation, length of service, and time deployed), life experiences and health-related factors (i.e., military deployment/combat experience, life stressors, mental health, physical health, and unhealthy behaviors) were used to examine follow-up response and survey mode over time in multivariable generalized estimating equation models.ResultsOverall, an average response rate of 60% was observed across all follow-up waves. Factors associated with follow-up survey response over time included increased educational attainment, married status, female sex, older age, military deployment (regardless of combat experience), and higher number of life stressors, mental health issues, and physical health diagnoses.ConclusionDespite the challenges associated with collecting multiple waves of follow-up survey data from members of the U.S. military during and after service, the Millennium Cohort Study has maintained a relatively robust response rate over time. The incorporation of tailored messages and outreach to those groups least likely to respond over time may improve retention and thereby increase the representativeness and generalizability of collected survey data.

【 授权许可】

CC BY   
© BioMed Central Ltd., part of Springer Nature 2023

【 图 表 】

Fig. 1

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