Journal of Obesity / 2014 / Article / Tab 4

Research Article

Associations between Aspects of Friendship Networks, Physical Activity, and Sedentary Behaviour among Adolescents

Table 4

Odds ratios (OR) and 95% confidence intervals (95% CI) for the association between sociodemographic characteristics, social network variables, general perceived social support from friends, physical activity, and sedentary behaviour for girls ().

Sufficiently active (≥60 min of MVPA every day) High sedentary (>2 hrs/day of sedentary behaviour)
Adjusted main effects
OR (95% CI)
Adjusted main effects and interaction
OR (95% CI)
Adjusted main effects
OR (95% CI)
Adjusted main effects and interaction
OR (95% CI)

Sociodemographic characteristics
 School
  A#1.001.001.001.00
  B 0.17 (0.03–1.04)0.16 (0.03–1.00)1.73 (0.78–3.88)1.79 (0.80–4.03)
  C0.86 (0.24–3.15)0.81 (0.22–2.94)2.89 (1.22–6.83)*3.10 (1.30–7.38)*
  D0.83 (0.16–4.24)0.90 (0.17–4.66)1.21 (0.46–3.18)1.20 (0.46–3.16)
  E 0.38 (0.07–2.01)0.38 (0.07–2.07)2.71 (1.03–7.13)*2.85 (1.08–7.52)*
  F 0.96 (0.19–4.73)0.99 (0.20–4.89)6.18 (1.94–19.64)*6.87 (2.11–22.35)*
 Age
  12 yrs and younger#1.001.001.001.00
  13 yrs0.68 (0.27–1.74)0.69 (0.27–1.79)1.19 (0.66–2.17)1.16 (0.64–2.12)
  14 yrs and older0.50 (0.14–1.80)0.48 (0.13–1.77)1.61 (0.78–3.35)1.63 (0.78–3.41)
 Family affluence
  Low#1.001.001.001.00
  Middle0.88 (0.31–2.49)0.79 (0.28–2.27)1.11 (0.60–2.07)1.09 (0.58–2.04)
  High1.46 (0.53–4.03)1.41 (0.51–3.92)1.15 (0.61–2.18)1.16 (0.61–2.21)
 Length of time in Canada
  More than 5 years#1.001.001.001.00
  5 years or less0.54 (0.15–2.01)0.61 (0.16–2.28)0.76 (0.37–1.55)0.76 (0.37–1.56)
 Number of times moved last year
  Did not move#1.001.001.001.00
  Moved at least once1.55 (0.70–3.42)1.60 (0.72–3.54)0.82 (0.48–1.40)0.91 (0.53–1.58)
Social network characteristics
 Density
  Low (density <12%)#1.001.001.001.00
  High (density ≥12%)1.05 (0.30–3.65)1.07 (0.30–3.81)1.43 (0.70–2.94)1.48 (0.72–3.04)
 Proportion of active close friends 1.14 (1.02–1.27)*1.15 (1.03–1.28)*0.94 (0.88–1.01)0.94 (0.88–1.00)
 Proportion of sedentary close friends1.02 (0.88–1.19)0.00 (0.00–0.90)*0.96 (0.88–1.05)0.96 (0.88–1.05)
 Betweenness centrality0.96 (0.87–1.07)0.96 (0.86–1.06)1.04 (0.97–1.11)1.76 (0.96–3.22)
 Popularity 0.99 (0.91–1.07)0.98 (0.91–1.07)1.03 (0.99–1.10)1.03 (0.98–1.09)
 Clique member
  Member#1.001.001.001.00
  Not a member0.84 (0.34–2.04)0.75 (0.30–1.86)1.38 (0.80–2.41)39.86 (1.54–1034.20)*
General perceived social support from friendsa1.06 (0.55–2.04)0.14 (0.02–0.88)0.98 (0.65–1.48)1.88 (0.99–3.55)

Interactions
 Proportion of sedentary close friends * General perceived social support from friends1.31 (1.04–1.67)*
 Clique member * General perceived social support from friends0.38 (0.15–0.96)*

, #referent category, aaverage general perceived social support index: 1 = received support none of the time to 4 = received support all of the time in increments of 0.25, MVPA: moderate-to-vigorous physical activity, OR: odds ratio, CI: confidence interval.