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. 2018 Mar 15;3(1):92-107.
doi: 10.17886/RKI-GBE-2018-035. eCollection 2018 Mar.

KiGGS Wave 2 longitudinal component - data collection design and developments in the numbers of participants in the KiGGS cohort

Michael Lange  1 , Robert Hoffmann  1 , Elvira Mauz  1 , Robin Houben  1 , Antje Gößwald  1 , Angelika Schaffrath Rosario  1 , Bärbel-Maria Kurth  1
Affiliations

KiGGS Wave 2 longitudinal component - data collection design and developments in the numbers of participants in the KiGGS cohort

Michael Lange et al. J Health Monit. .

Abstract

The German Health Interview and Examination Survey for Children and Adolescents (KiGGS) is conducted within the health monitoring framework that has been established at the Robert Koch Institute (RKI). In addition to regular cross-sectional studies of the current health of children and adolescents living in Germany, KiGGS also includes a longitudinal component - the KiGGS cohort. The longitudinal data, which can be linked individually throughout the various waves of the study, enables developments in health and their associated influencing factors to be analysed during the life course. Participants from the KiGGS baseline study form the baseline of the KiGGS cohort. The baseline study was carried out between 2003 and 2006 as a nationwide interview and examination survey of children and adolescents aged between 0 and 17 years. The KiGGS cohort comprises the 17,641 participants who, after taking part in the baseline study, also agreed to participate in recurring follow-ups that are to continue through adolescence into adulthood. Until now, two follow-up studies have been conducted: KiGGS Wave 1 (2009-2012, n=11,992) and KiGGS Wave 2 (2014-2017), which, in line with the baseline study, was conducted as an interview and examination survey. A total of 10,853 repeat participants were interviewed for KiGGS Wave 2; 6,465 people also took part in an examination. As such, 61.3% of the people who originally participated in the baseline study also provided data from interviews for KiGGS Wave 2. In addition, 50.8% have provided various forms of data for all three of the survey's waves. This data pool can help answer numerous questions from the epidemiological life course discipline regarding the population living in Germany; at the time of the baseline study, these participants were children and adolescents. In order to exploit the full potential of the study for life course research and to be able to trace the health and social development of different generations in the future, the concepts on which the study is based are to be further developed, and innovative strategies for participant retention are to be drawn up.

Keywords: CHILDREN AND ADOLESCENTS; HEALTH MONITORING; KIGGS COHORT; LONGITUDINAL COMPONENT; REPEAT PARTICIPATION.

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Conflict of interest statement

Conflicts of interest The authors declared no conflicts of interest.

Figures

Figure 1
Figure 1
The study design of the KiGGS cohort Source: Adapted from Mauz et al. [7]
Figure 2
Figure 2
Repeat participation in the first telephone interview follow-up survey KiGGS Wave 1 according to age at the time of the baseline study (n=8,655 girls; n=8,986 boys) Source: KiGGS Wave 1 (KiGGS cohort)
Figure 3
Figure 3
Study participant recruitment for the cohort in KiGGS Wave 2 Source: Own diagram
Figure 4
Figure 4
Repeat participation by study participants from the baseline sample in examinations and interviews or only interviews for KiGGS Wave 2 according to age at the time of the baseline study (n=8,654 female, n=8,987 male) Source: KiGGS Wave 2 (KiGGS cohort)
Figure 5
Figure 5
Participation of the baseline sample in the various KiGGS study waves Source: KiGGS baseline study (2003-2006), KiGGS Wave 1 (2009-2012), KiGGS Wave 2 (2014-2017)
See this image and copyright information in PMC

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