Validity of a multi-context sitting questionnaire across demographically diverse population groups: AusDiab3

Clark, Bronwyn K., Lynch, Brigid M., Winkler, Elisabeth A. H., Gardiner, Paul A., Healy, Genevieve N., Dunstan, David W. and Owen, Neville (2015) Validity of a multi-context sitting questionnaire across demographically diverse population groups: AusDiab3. International Journal of Behavioral Nutrition and Physical Activity, 12 148: . doi:10.1186/s12966-015-0309-y

Author Clark, Bronwyn K.
Lynch, Brigid M.
Winkler, Elisabeth A. H.
Gardiner, Paul A.
Healy, Genevieve N.
Dunstan, David W.
Owen, Neville
Title Validity of a multi-context sitting questionnaire across demographically diverse population groups: AusDiab3
Journal name International Journal of Behavioral Nutrition and Physical Activity   Check publisher's open access policy
ISSN 1479-5868
Publication date 2015-12
Year available 2015
Sub-type Article (original research)
DOI 10.1186/s12966-015-0309-y
Open Access Status DOI
Volume 12
Issue 148
Total pages 9
Place of publication London, United Kingdom
Publisher BioMed Central
Collection year 2016
Language eng
Formatted abstract
Background: Sitting time questionnaires have largely been validated in small convenience samples. The validity of this multi-context sitting questionnaire against an accurate measure of sitting time is reported in a large demographically diverse sample allowing assessment of validity in varied demographic subgroups.

Methods: A subgroup of participants of the third wave of the Australian Diabetes, Obesity, and Lifestyle (AusDiab3) study wore activPAL3™ monitors (7 days, 24 hours/day protocol) and reported their sitting time for work, travel, television viewing, leisure computer use and “other” purposes, on weekdays and weekend days (n = 700, age 36-89 years, 45 % men). Correlations (Pearson’s r; Spearman’s ρ) of the self-report measures (the composite total, contextual measures and items) with monitor-assessed sitting time were assessed in the whole sample and separately in socio-demographic subgroups. Agreement was assessed using Bland-Altman plots.

Results: The composite total had a correlation with monitor-assessed sitting time of r = 0.46 (95 % confidence interval [CI]: 0.40, 0.52); this correlation did not vary significantly between demographic subgroups (all >0.4). The contextual measure most strongly correlated with monitor-assessed sitting time was work (ρ = 0.25, 95 % CI: 0.17, 0.31), followed by television viewing (ρ = 0.16, 95 % CI: 0.09, 0.24). Agreement of the composite total with monitored sitting time was poor, with a positive bias (B = 0.53, SE 0.04, p < 0.001) and wide limits of agreement (±4.32 h).

Conclusions: This multi-context questionnaire provides a total sitting time measure that ranks participants well for the purposes of assessing health associations but has limited accuracy relative to activPAL-assessed sitting time. Findings did not differ in demographic subgroups.
Keyword ActivPAL
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Mater Research Institute-UQ (MRI-UQ)
Official 2016 Collection
School of Public Health Publications
School of Medicine Publications
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Citation counts: TR Web of Science Citation Count  Cited 2 times in Thomson Reuters Web of Science Article | Citations
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