Journal of Obesity / 2014 / Article / Tab 2

Research Article

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

Table 2

Descriptive statistics for the sociodemographic characteristics, general perceived social support from friends, physical activity, and sedentary behaviour for girls ().

Physical activitySedentary behaviour
Sufficiently active
(≥60 min of MVPA every day)
Insufficiently active
(≥60 min of MVPA on <7 days/week)
High sedentary
(>2 hrs/day of sedentary behaviour)
Low sedentary
(≤2 hrs/day of sedentary behaviour)

Sociodemographic characteristics
 Age [ (%)]
  12 years and younger22 (10.3)192 (89.7)156 (72.9)58 (27.1)a
  13 years11 (6.2)167 (93.8)140 (78.7)38 (21.3)
  14 years and older6 (4.2)137 (95.8)122 (85.3)21 (14.7)a
 Family affluence [ (%)]
  Low6 (6.7)84 (93.3)70 (77.8)20 (22.2)
  Medium14 (5.9)224 (94.1)186 (78.2)52 (21.8)
  High19 (9.2)188 (90.8)162 (78.3)45 (21.7)
 Length of time in Canada [ (%)]
  More than 5 years3 (5.3)54 (94.7)43 (75.4)14 (24.6)
  5 years or less36 (7.5)442 (92.5)375 (78.5)103 (21.5)
 Number of times moved last year [ (%)]
  Did not move28 (6.6)397 (93.4)336 (79.1)89 (20.9)
  Moved at least once11 (10.0)99 (90.0)82 (74.5)28 (25.5)
Social network characteristics
 Incoming close friend nominations [ (%)]
  Received ≥1 nomination39 (7.2)503 (92.8)425 (78.4)117 (21.6)
  Received no nominations0 (0.0)12 (100.0)11 (91.7)1 (8.3)
 Proportion active close friends [mean (SD)]0.43 (0.4)c0.25 (0.4)c0.24 (0.3)d 0.34 (0.4)d
 Proportion sedentary close friends [mean (SD)]0.75 (0.3)0.74 (0.3)0.76 (0.3)0.70 (0.3)
 Betweenness centrality [mean (SD)]2.68 (3.0)3.16 (4.0)3.26 (4.0)2.66 (3.5)
 Popularity (incoming nominations) [mean (SD)]6.36 (3.1)6.53 (3.5)6.67 (3.6)e 5.97 (2.7)e
 Clique member [ (%)]
  Not a member9 (6.1)138 (93.9)115 (78.2)32 (21.8)
  Member30 (7.7)358 (92.3)303 (78.1)85 (21.9)
Perceived support from friends [mean (SD)]f3.54 (0.6)3.53 (0.5)3.53 (0.5)3.53 (0.5)
Total girls [ (%)]39 (7.3)496 (92.7)418 (78.1)117 (21.9)

Significant () chi-square and Bonferroni-adjusted pair-wise comparison (-test); c,d,esignificant () difference in means (Mann-Whitney test), faverage 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 intensity physical activity, SD: standard deviation.