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Factors associated with non-participation in a face-to-face second survey conducted 5 years after the baseline survey.

Hara M, Shimanoe C, Otsuka Y, Nishida Y, Nanri H, Horita M, Yasukata J, Miyoshi N, Yamada Y, Higaki Y, Tanaka K - J Epidemiol (2014)

Bottom Line: Baseline characteristics and self-reported clinical outcomes of non-participants were compared with those of participants.Light drinking (0.1-22.9 g ethanol/day) was associated with participation.Both baseline characteristics and disease incidence during the follow-up period had significant associations with non-participation in the face-to-face second survey.

View Article: PubMed Central - PubMed

Affiliation: Department of Preventive Medicine, Faculty of Medicine, Saga University.

ABSTRACT

Background: Non-participation in second surveys is reported to be associated with certain baseline characteristics; however, such data are unavailable for Japanese populations. Although disease incidence during follow-up might influence participation, few reports have addressed this possibility. This study sought to identify factors associated with non-participation in a second survey of a population-based cohort, and to evaluate the influence of self-reported disease incidence on non-participation.

Methods: After excluding participants who left the area (n = 423), died (n = 163), and withdrew from the study (n = 9) among 12 078 participants in a baseline survey for the Japan Multi-Institutional Collaborative Cohort Study in the Saga region between 2005 and 2007, 11 483 people were invited by mail to participate in a face-to-face second survey between 2010 and 2012. The 5-year clinical health history of non-participants was assessed by mail or telephone. Baseline characteristics and self-reported clinical outcomes of non-participants were compared with those of participants.

Results: Among 11 483 people, 8454 (73.6%) participated in the second survey, and 2608 out of 3029 non-participants answered mail or telephone health surveys. Female sex, youngest and oldest ages, lower education, lower occupational class, current smoking, lower physical activity level, shorter sleep time, obesity, and constipation were associated with non-participation. Light drinking (0.1-22.9 g ethanol/day) was associated with participation. Non-participants reported a significantly higher incidence of cancer and a significantly lower proportion of hypertension compared with participants.

Conclusions: Both baseline characteristics and disease incidence during the follow-up period had significant associations with non-participation in the face-to-face second survey.

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Related in: MedlinePlus

Flow of participants in the J-MICC Study’s Saga region cohort.
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fig01: Flow of participants in the J-MICC Study’s Saga region cohort.

Mentions: The cohort is to be followed until 2025, and participants are to be removed from the study if they move out of Saga City. Information on date of leaving the city, along with any new address and date of death, if appropriate, will be obtained by reviewing the population registry of Saga City every year. When it is confirmed that a participant has left the city, they are sent a health survey questionnaire to gather information on disease incidence up until their departure. Reminders are sent once or twice to non-responders. Cause of death is confirmed by viewing death certificates at the Saga-chubu Public Health and Welfare Office, with the permission of the Director-General of the Prime Minister’s Office (Ministry of Public Management, Home Affairs, Posts and Telecommunications). During the 5 years between the baseline and the second surveys, 423 people left the study area, 163 deaths were recorded, and 9 people withdrew from the study. The remaining 11 483 people were considered the target population for the 5-year second survey (Figure).


Factors associated with non-participation in a face-to-face second survey conducted 5 years after the baseline survey.

Hara M, Shimanoe C, Otsuka Y, Nishida Y, Nanri H, Horita M, Yasukata J, Miyoshi N, Yamada Y, Higaki Y, Tanaka K - J Epidemiol (2014)

Flow of participants in the J-MICC Study’s Saga region cohort.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4310872&req=5

fig01: Flow of participants in the J-MICC Study’s Saga region cohort.
Mentions: The cohort is to be followed until 2025, and participants are to be removed from the study if they move out of Saga City. Information on date of leaving the city, along with any new address and date of death, if appropriate, will be obtained by reviewing the population registry of Saga City every year. When it is confirmed that a participant has left the city, they are sent a health survey questionnaire to gather information on disease incidence up until their departure. Reminders are sent once or twice to non-responders. Cause of death is confirmed by viewing death certificates at the Saga-chubu Public Health and Welfare Office, with the permission of the Director-General of the Prime Minister’s Office (Ministry of Public Management, Home Affairs, Posts and Telecommunications). During the 5 years between the baseline and the second surveys, 423 people left the study area, 163 deaths were recorded, and 9 people withdrew from the study. The remaining 11 483 people were considered the target population for the 5-year second survey (Figure).

Bottom Line: Baseline characteristics and self-reported clinical outcomes of non-participants were compared with those of participants.Light drinking (0.1-22.9 g ethanol/day) was associated with participation.Both baseline characteristics and disease incidence during the follow-up period had significant associations with non-participation in the face-to-face second survey.

View Article: PubMed Central - PubMed

Affiliation: Department of Preventive Medicine, Faculty of Medicine, Saga University.

ABSTRACT

Background: Non-participation in second surveys is reported to be associated with certain baseline characteristics; however, such data are unavailable for Japanese populations. Although disease incidence during follow-up might influence participation, few reports have addressed this possibility. This study sought to identify factors associated with non-participation in a second survey of a population-based cohort, and to evaluate the influence of self-reported disease incidence on non-participation.

Methods: After excluding participants who left the area (n = 423), died (n = 163), and withdrew from the study (n = 9) among 12 078 participants in a baseline survey for the Japan Multi-Institutional Collaborative Cohort Study in the Saga region between 2005 and 2007, 11 483 people were invited by mail to participate in a face-to-face second survey between 2010 and 2012. The 5-year clinical health history of non-participants was assessed by mail or telephone. Baseline characteristics and self-reported clinical outcomes of non-participants were compared with those of participants.

Results: Among 11 483 people, 8454 (73.6%) participated in the second survey, and 2608 out of 3029 non-participants answered mail or telephone health surveys. Female sex, youngest and oldest ages, lower education, lower occupational class, current smoking, lower physical activity level, shorter sleep time, obesity, and constipation were associated with non-participation. Light drinking (0.1-22.9 g ethanol/day) was associated with participation. Non-participants reported a significantly higher incidence of cancer and a significantly lower proportion of hypertension compared with participants.

Conclusions: Both baseline characteristics and disease incidence during the follow-up period had significant associations with non-participation in the face-to-face second survey.

Show MeSH
Related in: MedlinePlus