Associations between Aspects of Friendship Networks, Physical Activity, and Sedentary Behaviour among Adolescents
Table 3
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 boys ().
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 OR (95% CI)
Adjusted main effects and interaction OR (95% CI)
Sociodemographic characteristics
School
A#
1.00
1.00
1.00
B
0.43 (0.18–1.06)
2.34 (0.95–5.74)
2.40 (0.90–6.01)
C
0.42 (0.15–1.15)
2.92 (1.04–8.21)*
2.94 (1.02–8.47)*
D
0.67 (0.22–2.06)
1.54 (0.50–4.77)
1.50 (0.48–4.74)
E
0.26 (0.08–0.84)*
1.95 (0.66–5.76)
1.76 (0.58–5.32)
F
0.51 (0.16–1.61)
4.24 (1.30–13.77)*
4.00 (1.20–13.33)*
Age
12 yrs and younger#
1.00
1.00
1.00
13 yrs
1.40 (0.71–2.75)
1.09 (0.58–2.08)
1.16 (0.61–2.22)
14 yrs and older
0.83 (0.35–1.95)
2.23 (1.04–4.77)*
2.39 (1.10–5.18)*
Family affluence
Low#
1.00
1.00
1.00
Middle
1.29 (0.60–2.77)
1.21 (0.66–2.23)
1.25 (0.68–2.31)
High
2.00 (0.94–4.27)
1.55 (0.81–2.94)
1.54 (0.80–2.94)
Length of time in Canada
More than 5 years#
1.00
1.00
1.00
5 years or less
0.48 (0.19–1.25)
1.23 (0.58–2.63)
1.25 (0.58–2.70)
Number of times moved last year
Did not move#
1.00
1.00
1.00
Moved at least once
0.75 (0.35–1.61)
1.10 (0.58–2.10)
1.01 (0.52–1.94)
Social network characteristics
Density
Low (density <12%)#
1.00
1.00
1.00
High (density ≥12%)
0.56 (0.23–1.33)
2.93 (1.32–6.49)*
2.99 (1.34–6.69)*
Proportion of active close friends
1.11 (1.02–1.21)*
0.96 (0.89–1.03)
0.66 (0.00–0.96)*
Proportion of sedentary close friends
1.02 (0.92–1.12)
0.91 (0.83–1.01)
0.58 (0.00–0.88)*
Betweenness centrality
1.02 (0.96–1.08)
1.00 (0.95–1.07)
1.01 (0.95–1.07)
Popularity
1.02 (0.97–1.07)
0.98 (0.93–1.03)
0.97 (0.93–1.02)
Clique member
Member#
1.00
1.00
1.00
Not a member
1.21 (0.68–2.16)
1.32 (0.76–2.27)
1.31 (0.75–2.27)
General perceived social support from friends
a
0.63 (0.42–0.96)*
1.35 (0.92–1.98)
0.34 (0.12–1.03)
Interactions
Proportion of active close friends * General perceived social support from friends
1.12 (1.00–1.26)*
Proportion of sedentary close friends * General perceived social support from friends
1.16 (1.01–1.32)*
, #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. No significant interactions between friendship network characteristics and general perceived social support for boys’ physical activity.
