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The SED-GIH: A Single-Item Question for Assessment of Stationary Behavior-A Study of Concurrent and Convergent Validity.

Journal article
Authors Lena V Kallings
Sven J G Olsson
Örjan Ekblom
Elin Ekblom-Bak
Mats Börjesson
Published in International journal of environmental research and public health
Volume 16
Issue 23
ISSN 1660-4601
Publication year 2019
Published at Institute of Neuroscience and Physiology, Department of Physiology
Department of Food and Nutrition, and Sport Science
Language en
Links dx.doi.org/10.3390/ijerph16234766
www.ncbi.nlm.nih.gov/entrez/query.f...
Subject categories Clinical Medicine

Abstract

The unfavorable health consequences of prolonged time spent sedentary (stationary) make accurate assessment in the general population important. However, for many existing questionnaires, validity for identifying stationary time has not been shown or has shown low validity. This study aimed to assess the concurrent and convergent validity of the GIH stationary single-item question (SED-GIH). Data were obtained in 2013 and 2014 from two Swedish cohorts. A total of 711 men and women provided valid accelerometer data (Actigraph GT3X+) and were included for concurrent validity analyses. A total of 560 individuals answered three additional commonly used sedentary questions, and were included for convergent validity analysis. The SED-GIH displayed a significant correlation with total stationary time (rs = 0.48) and time in prolonged stationary time (rs = 0.44). The ROC analysis showed an AUC of 0.72 for identifying individuals with stationary time over 600 min/day. The SED-GIH correlated significantly with other previously used questions (r = 0.72-0.89). The SED-GIH single-item question showed a relatively high agreement with device-assessed stationary behavior and was able to identify individuals with high levels of stationary time. Thus, the SED-GIH may be used to assess total and prolonged stationary time. This has important implications, as simple assessment tools of this behavior are needed in public health practice and research.

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