1. The Swedish physical activity and fitness cohort born in 1958 - dropout analysis and overview at 36-year follow-up.
- Author
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Aasa, U., Lundell, S., Barnekow‐Bergkvist, M., Jansson, E., and Westerståhl, M.
- Subjects
BODY composition ,ECOLOGY ,ANTHROPOMETRY ,CHI-squared test ,CONFIDENCE intervals ,EXERCISE tests ,GENETICS ,HEALTH ,LONGITUDINAL method ,MUSCLE strength ,PHYSICAL fitness ,PROBABILITY theory ,QUESTIONNAIRES ,REGRESSION analysis ,RESEARCH funding ,STATISTICAL hypothesis testing ,STATISTICS ,T-test (Statistics) ,LOGISTIC regression analysis ,DATA analysis ,SOCIOECONOMIC factors ,STATISTICAL reliability ,AEROBIC capacity ,LIFESTYLES ,HUMAN research subjects ,PHYSICAL activity ,DATA analysis software ,DESCRIPTIVE statistics ,ODDS ratio ,MANN Whitney U Test - Abstract
The main aim of the Swedish physical activity and fitness cohort study ( SPAF-1958) was to describe physical fitness, physical activity, health, and lifestyle across part of the lifespan, and to assess the influences on these factors from the environment, personal factors, and genetics. There is inevitable dropout from longitudinal studies, and it may be systematic. The aim of this first paper of the second follow-up of SPAF-1958 was to provide a dropout analysis to consider to what extent the participants, at 52 years of age, remain a representative sample of the original adolescent study population. Additional aims were to provide an overview of the study protocol and the ongoing study population. Ongoing study participants in SPAF born in 1958 were, at the second follow-up at the age of 52, still representative of the study cohort in terms of sex, adolescent geographical area, upper secondary school program, adolescent body composition, muscular strength, and muscular endurance. However, a higher physical activity and, among women, a higher aerobic capacity in adolescence decreased the risk for dropout. It is important when interpreting results from longitudinal studies to adjust for the systematic dropout that could bias the conclusions drawn from the results. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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