Table 3 Results comparing sitting time measured by the SIT-Q to estimates derived from Seven-Day Activity Diaries (both postural and MET-based definitions of sedentary) (n = 69)

Meals (h/day)

1.52 (0.79)

-0.58 (-0.75, -0.42)

0.19 (p = 0.11)

1.55 (0.74)

-0.65 (-0.83, -0.48)

0.29 (p = 0.01)

weekday only

1.47 (0.81)

-0.63 (-0.81, -0.44)

0.07 (p = 0.58)

1.47 (0.80)

-0.69 (-0.88, -0.50)

0.23 (p = 0.07)

weekend only

1.52 (1.03)

-0.45 (-0.66, -0.25)

0.36 (p < 0.01)

1.61 (0.95)

-0.52 (-0.75, -0.28)

0.37 (p < 0.01)

Transportation (h/day)

1.34 (0.91)

-0.53 (-0.67, -0.38)

0.37 (p < 0.01)

1.37 (0.92)

-0.54 (-0.69, -0.39)

0.34 (p < 0.01)

weekday only

1.21 (0.93)

-0.60 (-0.77, -0.43)

0.39 (p < 0.01)

1.27 (0.92)

-0.62 (-0.79, -0.45)

0.37 (p < 0.01)

weekend only

1.29 (1.27)

-0.38 (-0.64, -0.11)

0.11 (p = 0.38)

1.26 (1.27)

-0.38 (-0.64, -0.12

0.11 (p = 0.37)

Work, Study and Volunteering (h/day)

2.64 (3.48)

-0.17 (-0.51, 0.16)

0.76 (p < 0.01)

2.72 (3.30)

-0.24 (-0.59, 0.11)

0.75 (p < 0.01)

Childcare and elder care (h/day)

0 (0)

0.11 (-0.01, 0.23)

0.49 (p < 0.01)

0 (0.02)

0.15 (0.03, 0.27)

0.46 (p < 0.01)

weekday only

0 (0)

0.11 (-0.03, 0.24)

0.47 (p < 0.01)

0 (0.03)

0.16 (0.01, 0.29)

0.36 (p < 0.01)

weekend only

0 (0)

0.15 (-0.01, 0.30)

0.61 (p < 0.01)

0 (0)

0.18 (0.03, 0.34)

0.53 (p < 0.01)

Leisure time (h/day)

2.57 (2.01)

1.93 (1.38, 2.48)

0.26 (p = 0.03)

2.61 (2.12)

1.94 (1.39, 2.49)

0.26 (p = 0.03)

weekday only

2.33 (2.28)

1.68 (1.08, 2.29)

0.31 (p = 0.01)

2.33 (2.35)

1.68 (1.08, 2.28)

0.32 (p = 0.01)

weekend only

3.24 (2.89)

2.44 (1.68, 3.20)

0.14 (p = 0.26)

2.75 (3.50)

3.01 (2.17, 3.86)

0.09 (p = 0.45)

Total sitting time (h/day)

9.50 (2.36)

-0.15 (-0.78, 0.47)

0.53 (p < 0.01)

9.26 (2.25)

0.09 (-0.50, 0.68)

0.52 (p < 0.01)