Women's Health Australia homepage about the Women's Health Australia project Women's Health Australia staff Women's Health Australia current events Women's Health Australia surveys and data Women's Health Australia substudies information for Women's Health Australia participants University of Newcastle contact Women's Health Australia Women's Health Australia publications and presentations University of Queenlsand Women's Health Australia homepage about the Women's Health Australia project Women's Health Australia staff Women's Health Australia current events Women's Health Australia surveys and data Women's Health Australia substudies information for Women's Health Australia participants University of Newcastle contact Women's Health Australia Women's Health Australia publications and presentations Women's Health Australia homepage about the Women's Health Australia project Women's Health Australia staff Women's Health Australia current events Women's Health Australia surveys and data Women's Health Australia substudies information for Women's Health Australia participants University of Newcastle contact Women's Health Australia Women's Health Australia publications and presentations Women's Health Australia homepage about the Women's Health Australia project Women's Health Australia staff Women's Health Australia current events Women's Health Australia surveys and data Women's Health Australia substudies information for Women's Health Australia participants University of Newcastle contact Women's Health Australia Women's Health Australia publications and presentations

Women's Health Australia homepage about the Women's Health Australia project Women's Health Australia staff Women's Health Australia current events Women's Health Australia surveys and data Women's Health Australia substudies information for Women's Health Australia participants University of Newcastle contact Women's Health Australia Women's Health Australia publications and presentations Women's Health Australia homepage about the Women's Health Australia project Women's Health Australia staff Women's Health Australia current events Women's Health Australia surveys and data Women's Health Australia substudies information for Women's Health Australia participants University of Newcastle contact Women's Health Australia Women's Health Australia publications and presentations Welcome to Women's Health Australia (WHA)

 
 


Presentations 2008

van Uffelen J, Watson M, Brown W & Dobson A. Do responses to questions about sitting make sense? Convergent validity of self-reported sitting time with time-use questions.
Amsterdam, Netherlands, 13-16 April 2008

Purpose: Little is known about the measurement properties of the self-report sitting time questions that are increasingly being used in epidemiological research. The aim of this study is to investigate the convergent validity of self-reported sitting time questions with time-use questions. It was hypothesized that mean values of sitting time would increase with increasing reported engagement in other sedentary activities, and decrease with increasing reported engagement in non-sedentary activities. Methods: Data from mid-age women participating in the Australian Longitudinal Study on Women’s Health were used (n=10,593 in 2001 and n=9,982 in 2004). In both surveys sitting time was assessed using two questions: ‘How many hours per day do you typically spend sitting on a week day?’ and separately, ‘on a weekend day?’ Participants were also asked to mark one of six responses (from 'no time' to '>41 hour/week’) to indicate time spent in the following activities: ‘paid work’, ‘work without pay’, ‘home duties’, ‘active leisure (e.g. Walking, exercise, sport)', ‘passive leisure (e.g. TV, listening to music, reading, relaxing)’ and ‘using a computer (for work, study or hobbies; 2001 only)'. For both 2001 and 2004, mean weekday and weekend sitting time was calculated for each response category. ANOVA was used to examine differences in mean sitting time across the six response categories for each activity. Results: In 2001, mean weekday sitting time increased with increasing time in ‘paid work’, ‘passive leisure’ and ‘using a computer’ and decreased with increasing time in ‘home duties' (all p<0.005). The same pattern emerged three years later, when there was also a decrease in sitting time as hours spent in ‘work without pay’ increased. In 2001 and 2004, common differences in mean weekend day sitting time were observed for ‘work without pay’, ‘passive leisure’, and ‘active leisure’ (all p<0.005). Mean weekend day sitting time increased consistently with increasing time in 'passive leisure'. Conclusion: The results were largely in line with the hypotheses and provide some confidence in the validity of the self-reported sitting time responses.
Link to Project Aims page Link to Project Progress page Link to Project Methods page Link to Project Progress page 		 


 
 

Last updated: 9 June 2006 by Cath Chojenta © Copyright