Objectively-assessed and self-reported sedentary time in relation to multiple socioeconomic status indicators among adults in England: a cross-sectional study.
OBJECTIVE
To examine the associations between socioeconomic position (SEP) and multidomain self-reported and objectively-assessed sedentary time (ST).


METHODS
Cross-sectional.


METHODS
General population households in England.


METHODS
2289 adults aged 16-96 years who participated in the 2008 Health Survey for England.


RESULTS
Accelerometer-measured ST, and self-reported television time, non-television leisure-time sitting and occupational sitting/standing. We examined multivariable associations between household income, social class, education, area deprivation for each SEP indicator (including a 5-point composite SEP score computed by aggregating individual SEP indicators) and each ST indicator using generalised linear models.


RESULTS
Accelerometry-measured total ST and occupational sitting/standing were positively associated with SEP score and most of its constituent SEP indicators, while television time was negatively associated with SEP score and education level. Area-level deprivation was largely unrelated to ST. Those in the lowest composite SEP group spent 64 (95% CIs 52 to 76) and 72 (48 to 98), fewer minutes/day in total ST and occupational sitting/standing compared to those in the top SEP group, and an additional 48 (35-60) min/day watching television (p<0.001 for linear trend). Stratified analyses showed that these associations between composite SEP score and total ST were evident only among participants who were in employment.


CONCLUSIONS
Occupational sitting seems to drive the positive association between SEP and total ST. Lower SEP is linked to higher TV viewing times.
Charles Perkins Centre, University of Sydney, Sydney, New South Wales, Australia Faculty of Health Sciences, Discipline of Exercise and Sport Sciences, University of Sydney, Sydney, New South Wales, Australia PARG (Physical Activity Research Group), Department of Epidemiology and Public Health, University College London, London, UK.
Emmanuel
E
Stamatakis
PARG (Physical Activity Research Group), Department of Epidemiology and Public Health, University College London, London, UK Department of Social Sciences, University of Southampton, London, UK.
Ngaire
N
Coombs
Division of Health Sciences, University of South Australia, Adelaide, South Australia, Australia.
Alex
A
Rowlands
PARG (Physical Activity Research Group), Department of Epidemiology and Public Health, University College London, London, UK.
Nicola
N
Shelton
Department of Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK.
Melvyn
M
Hillsdon
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D004739:England; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D057185:Sedentary Behavior; D057566:Self Report; D012959:Socioeconomic Factors; D013690:Television / Q000706:statistics & numerical data*; D013997:Time Factors; D055815:Young Adult
EPIDEMIOLOGY; PUBLIC HEALTH; SOCIAL MEDICINE