Skip to main content

Table 2 Participant characteristics (mean (SD), unless otherwise noted)

From: Correlates of objectively measured sedentary time and self-reported screen time in Canadian children

 

Total ( n  = 567)

Boys ( n  = 239)

Girls ( n  = 328)

Child characteristics

   

Age (years)

10.0 (0.4)

10.1 (0.4)

10.0 (0.4)

Height (cm)

143.8 (7.2)

143.6 (6.8)

143.9 (7.4)

Weight (kg)

38.1 (9.0)

38.3 (9.1)

37.9 (9.1)

Percent body fat

20.5 (7.4)

18.7 (7.2)

21.9 (7.3)*

Waist circumference (cm)

63.0 (8.4)

64.1 (8.8)

62.2 (8.0)**

BMI z-score

0.20 (1.02)

0.32 (0.98)

0.11 (1.04)***

Weight status (n,%)

   

  Underweight

15 (2.7%)

2 (0.8%)

13 (4.0%)

  Normal weight

422 (74.7%)

177 (74.4%)

245 (74.9%)

  Overweight

68 (12.0%)

29 (12.2%)

39 (11.9%)

  Obese

60 (10.6%)

30 (12.6%)

30 (9.2%)

Ethnicity (n,%)

   

  White/Caucasian

373 (66.6%)

160 (68.1%)

213 (65.6%)

African American

15 (2.7%)

4 (1.7%)

11 (3.4%)

Asian

57 (10.2%)

25 (10.6%)

32 (9.9%)

First Nations

2 (0.4%)

1 (0.4%)

1 (0.3%)

East Indian

5 (0.9%)

1 (0.4%)

4 (1.2%)

Do not know/other

108 (19.3%)

11 (18.7%)

64 (19.6%)

Physical activity (min/day)

   

  MVPA

58.7 (19.3)

67.1 (19.3)

52.7 (17.0)*

  Moderate

41.8 (12.1)

47.6 (11.7)

37.8 (10.7)*

  Light PA

304.8 (45.0)

310.1 (43.7)

301.1 (45.5)****

Total SED (min/day)

511.4 (63.1)

506.9 (66.0)

514.5 (60.9)

Self-reported screen time score (hour/day)

   

  Total screen time

2.8 (1.8)

2.9 (1.6)

2.7 (1.9)

  TV

1.5 (1.3)

1.5 (1.1)

1.6 (1.2)

  Video game/computer

1.3 (1.0)

1.4 (1.0)*

1.1 (1.0)

Household income (n,%)

   

  Less than $14,000

16 (3.0)

5 (2.2)

11 (3.5)

$15,000--59,999

89 (16.4)

33 (14.4)

56 (17.7)

$60,000-139,999

231 (42.4)

100 (43.7)

131 (39.4)

$140,000 and above

209 (38.4)

91 (39.7)

118 (37.3)

Parental characteristics

Mother

Education

   

  High school or less

85 (15.3)

35 (15.1)

50 (15.4)

  Greater than high school

473 (84.7)

198 (85.0)

275 (84.6)

Self-reported BMI (kg/m2)

24.9 (5.2)

25.3 (5.6)

24.6 (4.9)

Age (years)

41.7 (5.1)

41.5 (4.9)

41.9 (5.2)

Father

Education

   

  High school or less

102 (18.7)

40 (17.7)

56 (19.3)

  Greater than high school

444 (81.3)

185 (82.3)

259 (80.7)

Self-reported BMI (kg/m2)

26.8 (4.4)

26.7 (4.4)

26.8 (4.4)

Age (years)

44.1 (6.0)

44.4 (6.2)

43.8 (5.8)

  1. BMI: body mass index; MVPA: moderate- to-vigorous-intensity physical activity; PA: physical activity; SED: accelerometer measured total daily sedentary time.
  2. Unpaired t-test * p < 0.0001, ** p = 0.0069, ***p = 0.0175, ****p = 0.0245.