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Table 5 Sociodemographic, geographic, psychographic and behavioral characteristics of clusters, LSAC data

From: ‘Social screens’ and ‘the mainstream’: longitudinal competitors of non-organized physical activity in the transition from childhood to adolescence

Characteristics ab

Cluster 1 (n = 143) (‘Social Screens’)

Cluster 2 (n = 900) (‘The Mainstream’)

Sig.

Sociodemographic/physical characteristics

 Sex (male), n (%) [w1]

66 (46.2%)

472 (52.4%)

0.162

 Indigenous, n (%) [w1]

2 (1.4%)

21 (2.3%)

0.758c

 Speaks a language other than English at home, n (%)

8 (5.6%)

70 (7.9%)

0.352

 Socioeconomic position z-score, mean (SD)

0.0 (1.1)

0.1 (1.0)

0.485

 Attends public school, n (%)

89 (63.1%)

431 (48.3%)

0.001

 Number of siblings in household, mean (SD)

1.6 (1.0)

1.6 (1.0)

0.741

 Child has two parents living at home, n (%)

119 (83.8%)

757 (84.1%)

0.926

 Body mass index of child z-score, mean (SD)

0.4 (1.0)

0.3 (1.0)

0.577

 Gross motor coordination scale, mean (SD)

1.8 (0.4)

1.8 (0.5)

0.942

 Pubertal development scale, mean (SD)

2.5 (0.8)

2.2 (0.8)

0.000d

 PEDS physical health scale, mean (SD)

82.8 (13.7)

84.6 (14.9)

0.179

Geographic characteristics

 Child lives in an urban area, n (%)

130 (90.9%)

760 (84.4%)

0.042

Psychographic characteristics

 SDQ internalising symptoms, mean (SD)

3.3 (2.9)

3.2 (3.0)

0.894

 SDQ externalising symptoms, mean (SD)

3.9 (3.2)

3.9 (3.3)

0.799

 SATI introversion scale, mean (SD)

2.6 (0.7)

2.6 (0.8)

0.783

 SATI persistence scale, mean (SD)

3.6 (0.9)

3.6 (0.8)

0.827

 SATI reactivity scale, mean (SD)

2.5 (0.9)

2.4 (0.8)

0.298

 Child bullied at school in the last year, n (%)

40 (28.4%)

229 (26.2%)

0.588

Behavioral characteristics

 Child participated in any out-of-school activities in the last week, n (%)

106 (74.6%)

739 (82.2%)

0.032

 Overall physical activity, mean min/day (SD)e

67.2 (74.4)

82.8 (89.5)

0.047

Season of measurementf

 Wave 4 - winter

60 (42.0%)

488 (54.2%)

0.006

 Wave 4 - autumn

53 (37.1%)

216 (24.0%)

0.001

  1. n number of participants, % proportion of sample, w wave of measurement, SD standard deviation
  2. Chi-square tests (categorical variables) and independent t-tests (continuous variables), significant results are in boldface
  3. a.Unless otherwise specified, the characteristics listed here were measured at Wave 5 (13y).
  4. b.Variable-specific missing data: Sex (n = 0), Indigenous status (n = 0), language spoken at home (n = 10), socioeconomic position (n = 9), school type (n = 9), number of siblings (n = 1), number of parents in home (n = 1), body mass index (n = 11), gross motor coordination (n = 5), pubertal development (n = 7), PEDS physical health scale (n = 12), urban/rural status (n = 0), SDQ internalising (n = 12), SDQ externalising (n = 12), SATI introversion (n = 12), SATI persistence (n = 12), SATI reactivity (n = 12), child bullied at school (n = 28), child participation in out-of-school activities (n = 2), overall PA (n = 0), season of measurement (n = 0)
  5. c.Fisher’s exact test performed because at least one cell had an expected value of less than 5.
  6. d.When this result was tested separately for boys and girls, the difference between clusters was only significant for girls (F = 13.6, p < 0.001).
  7. e.Overall PA was calculated as the total duration of time spent in non-organized PA, organized PA, active transport or active chores/work.
  8. f.All seasons for both waves were tested, only statistically significant differences reported here.