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 | Â | Â | Â |
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,%) | Â | Â | Â |
  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,%) | Â | Â | Â |
  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) | Â | Â | Â |
  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) | Â | Â | Â |
  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,%) | Â | Â | Â |
  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 | Â | Â | Â |
  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 | Â | Â | Â |
  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) |