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Table 4 Coefficients (95% Confidence Interval) for the Linear Regression of SF-36 Scales in 2009 on Sitting Hours per Week in 2003.

From: Longitudinal association of physical activity and sedentary behavior during leisure time with health-related quality of life in community-dwelling older adults

  Physical functioning Physical role Bodily pain General health
Sitting hours/week*     
Quartile 1 (lower) Ref. Ref. Ref. Ref.
Quartile 2 -5.99 (-9.79 to -2.20) ‡ -6.84 (-13.57 to -0.11) † -3.19(-7.70 to 1.32) -0,38 (-3,05 to 2,28)
Quartile 3 -5.44 (-10.08 to -0.80) † -4.73 (-12.96 to 3.48) 0.15 (-5.35 to 5.67) 2,46 (-0,78 to 5,72)
Quartile 4 (upper) -9.21 (-13.36 to -5.04) ‡ -11.96 (-19.33 to -4.59) ‡ -6.58 (11.51 to -1.64) ‡ -2,68 (-5,60 to 0,23)
   p for linear trend < 0.0001 0.005 0.03 0.14
   R-square 0.43 0.22 0.32 0.34
  Vitality Social functioning Emotional role Mental health
Sitting hours/week*     
Quartile 1 (lower) Ref. Ref. Ref. Ref.
Quartile 2 -0.69 (-4.50 to 3.10) -2.36 (-6.73 to 1.99) -2.77 (-8.68 to 3.13) -1,13 (-4,63 to 2,35)
Quartile 3 -0.68 (-5.31 to 3.96) -3.11 (-8.43 to 2.21) -3.03 (-10.24 to 4.19) -0,67 (-4,94 to 3,59)
Quartile 4 (upper) -5.04 (-9.21 to -0.88) † -6.36 (-11.17 to -1.56) ‡ -6.06 (-12.53 to 0.40) -5,04 (-8,87 to -1,21) †
   p for linear trend 0.01 0.008 0.07 0.009
   R-square 0.36 0.23 0.11 0.35
  1. * The cut-off points for sitting hours per week were: 21.0; 28.0; 42.0 in men, and 10.0; 21.3; 26.3 in women
  2. † p < 0,05; ‡ p < 0,01.
  3. Model adjusted for sex (man, woman), age (years), educational level (no education, primary, secondary or university), size of municipality of residence (rural, urban), tobacco consumption (never smoker, former smoker, current smoker), alcohol consumption (non drinker, former drinker, moderate drinker, excessive drinker), coronary disease, stroke, cancer at any site, chronic obstructive pulmonary disease, diabetes mellitus, arterial hypertension, body mass index (quartile 1, quartile 2, quartile 3, quartile 4), leisure-time physical activity in MET-hr/week in 2003 (no activity, quartile 1, quartile 2, quartile 3, quartile 4) and score on appropriate SF-36 scale in 2003 (continuous from 0 to 100 points).
  4. Overall statistical significance (F-test) for each model was p < 0.01.