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. 2013 May 31;3(6):e002901. doi: 10.1136/bmjopen-2013-002901

Table 1.

Baseline characteristics

Women n=1084
Men n=909
Variable Mean SD Mean SD p Value
Age (years) 37.7 4.9 37.5 5.1 0.36
Body mass index (kg/m2) 25.3 4.9 26.7 4.2 <0.0001
Waist circumference (cm) 83.6 12.4 94.2 11.8 <0.0001
Sedentary behaviour
 Total sedentary time (h/day)* 5.2 3.0 5.5 2.8 <0.0001
 Screen time (h/day)† 2.7 1.8 3.1 1.8 <0.0001
 TV viewing (h/day) 1.7 1.1 1.9 1.1 0.0009
 Computer use (h/day) 1.0 1.3 1.2 1.4 <0.0001
 Reading (h/day) 1.1 0.8 0.8 0.6 <0.0001
 Relaxation (h/day) 1.1 1.1 1.2 1.1 0.007
 Radio/music listening (h/day) 0.3 0.8 0.4 0.7 <0.0001
Physical activity
 Total MET index(MET h/week) 19.6 20.5 19.9 22.0 0.15
 Leisure-time exercise (MET h/week) 13.5 14.2 15.8 17.6 0.53
 Active commuting (MET h/week) 6.1 12.4 4.0 11.1 <0.0001
 Light gardening and other housework (h/month) 25.0 21.5 11.2 13.1 <0.0001
 Moderate gardening and other housework (h/month) 10.4 11.9 6.4 7.4 <0.0001
 Strenuous gardening and other housework (h/month) 5.7 10.1 7.1 12.6 0.14
 Occupational physical workload (scale, 1–6) 3.3 1.5 3.8 1.6 <0.0001
Covariates
 Energy intake (kcal/day) 2168 678 2675 852 <0.0001
 Diet score (points, scale 1–27) 15.1 3.7 11.8 3.7 <0.0001
 Alcohol consumption (drinks/day) 0.6 0.7 1.4 1.9 <0.0001
 Sleep duration (h/day) 7.5 1.6 7.3 1.6 <0.0001
 Socioeconomic status (scale, 1–3) 2.2 0.9 2.0 0.9 <0.0001
 Daily smoking (%) 15 23 <0.0001

Values are mean and SD.

MET index=leisure-time exercise+active commuting.

p Value (non-parametric Kruskal-Wallis test).

*TV viewing+computer use+reading+music/radio+other relaxation hours.

†TV viewing+computer use.

MET, metabolic equivalent; diet score, adherence to the recommended diet.