Table 2

Multivariable-adjusted associations between equivalised household income and sedentary time in children

Household income quintilesModel 1* coefficient†Model 2* coefficient†Model 3* coefficient†
(95% CI)(95% CI)(95% CI)
Accelerometer sedentary time (min/day) (N=587)
 <£10 671 (reference)
 £10 671–£17 788−11.64 (−27.17 to 3.88)−12.33 (−27.81 to 3.13)−8.76 (−21.6 to 4.07)
 £17 789–£27 316−0.19 (−14.38 to 13.99)−3.05 (−18 to 11.88)−7.78 (−21.05 to 5.49)
 £27 317–£44 19915.82 (1.12 to 30.53)8.49 (−8.19 to 25.18)7.31 (−7.25 to 21.88)
 >£44 19915.02 (−1.77 to 31.82)1.2 (−16.94 to 19.35)−1.3 (−16.2 to 13.59)
 Trend p0.0010.3820.592
TV time (min/day) (N=3822)
 <£10 671 (reference)
 £10 671–£17 788−9.65 (−19.86 to 0.56)−7.98 (−18.17 to 2.19)−8.3 (−18.4 to 1.78)
 £17 789–£27 316−10.87 (−20.84 to −0.9)−7.75 (−18.56 to 3.06)−9.17 (−19.87 to 1.53)
 £27 317–£44 199−10.51 (−20.58 to −0.44)−4.06 (−15.55 to 7.42)−5.92 (−17.29 to 5.44)
 >£44 199−21.51 (−31.34 to −11.69)−14.38 (−26.27 to −2.49)−17.13 (−29.14 to −5.12)
 Trend p0.0010.0690.020
Non-TV sitting time (min/day) (N=3820)
 <£10 671 (reference)
 £10 671–£17 7884.47 (−4.22 to 13.16)5.08 (−3.57 to 13.73)4.57 (−4.01 to 13.16)
 £17 789–£27 31611.45 (2.1 to 20.79)11.65 (1.71 to 21.58)9.86 (0 to 19.72)
 £27 317–£44 19913.32 (4.39 to 22.25)12.37 (2.59 to 22.15)10.18 (0.43 to 19.92)
 >£44 19910.08 (0.79 to 19.36)9.32 (−1.32 to 19.98)6.03 (−4.73 to 16.79)
 Trend p0.0040.1280.375
  • *Model 1: adjusted for age and sex; model 2: further adjustments for body mass index, limiting long-term illness, social class and area deprivation; model 3: further adjustments for time spent in active transportation to and from school, time spent in sporting or informal activities and moderate-to-vigorous physical activity time. Models with accelerometer sedentary time as the outcome were also adjusted for average accelerometer wear time on valid days.

  • †Generalised linear model coefficients; coefficients indicate mean differences (in daily sedentary time) between the reference category (>£39 000) and each of the other household income quartiles, for example,a value of five indicates that a specific category had an average daily sedentary time that is 5 min higher than the referent group.