Table 2

Demographic characteristics, body mass index and physical activity by quartile of perceived disorder, higher quartiles indicate higher perceived disorder
Full sample Quartile 1 Quartile 2 Quartile 3 Quartile 4 Test statistic (aChi-square or bF-statistic) and p-value
N = 101 Perceived disorder Perceived disorder Perceived disorder Perceived disorder
n = 23 n = 26 n = 20 n = 32
Age 13.99 ± 1.31 13.73 ± 1.28 14.07 ± 1.38 14.05 ± 1.27 14.06 ± 1.34 0.36 a, 0.784
Sex (% female) 55 47.83 61.54 65.00 46.88 2.57 a, 0.462
Income 8.94 a, 0.177
≤ $30,000 24 (23.76) 5 (21.74) 3 (11.54) 5 (25.00) 11 (34.38)
$30,001 - $60,000 45 (44.55) 8 (34.78) 14 (53.85) 7 (35.00) 16 (50.00)
$60,001+ 32 (31.68) 10 (43.48) 9 (34.62) 8 (40.00) 5 (15.63)
Highest education level 0.331 a, 0.565
Attained in the household (by any adult)
  < High school 4 (3.96) 2 (8.70) 1 (3.85) 0 1 (3.13)
  High school 9 (8.91) 1 (4.35) 2 (7.69) 2 (10.00) 4 (12.50)
  Some college 39 (38.61) 8 (34.78) 6 (23.08) 13 (65.00) 12 (37.50)
  College+ 49 (48.51) 12 (52.17) 17 (65.38) 5 (25.00) 15 (46.88)
Weight (kg) 65.30 ± 19.77 59.12 ± 13.44 63.37 ± 16.26 61.92 ± 9.71 73.42 ± 27.47
Height (inches) 64.77 ± 3.71 64.05 ± 4.04 65.29 ± 3.95 64.61 ± 2.83 64.97 ±3.81
Obesity status n (%) 5.77 a, 0.016
  Normal Weight 57 (56.44) 14 (60.87) 16 (61.54) 23 (60.00) 15 (46.88)
  Overweight 26 (25.74) 8 (34.78) 7 (26.92) 7 (35.0) 4 (12.50)
  Obese 18 (17.82) 1 (4.35) 3 (11.54) 1 (5.0) 13 (40.63)
Physical activity (total minutes)
  Sedentary 1050.34 ± 84.52 1040 ± 87.82 1045.57 ± 92.91 1076.43 ± 71.52 1046.38 ± 82.75 0.71 b, 0.546
  Light 356.28 ± 75.25 356.66 ± 77.58 368.09 ± 84.34 329.80 ± 51.60 358.20 ± 76.86 0.96 b, 0.417
  Moderate 26.90 ± 18.46 32.19 ± 20.78 24.06 ±17.50 19.92 ± 14.10 29.33 ± 18.76 5.20 b, 0.157
  Vigorous 2.81 ± 4.05 4.00 ± 5.02 2.26 ± 3.24 1.96 ± 2.39 2.87 ± 4.55 3.19b, 0.362
Self-reported physical activityd (total minutes)
  Basketball 44.83 ± 66.11 62.54 ± 87.59 43.66 ± 51.42 26.02 ± 59.93 38.37 ± 55.09 0.63b, 0.600
  Dance 8.08 ± 20.20 6.43 ± 21.57 0 19.90 ± 29.30 8.47 ± 18.96 1.28b, 0 .290
  Football 12.04 ± 28.96 22.23 ± 42.75 3.75 ± 10.60 19.89 ± 35.22 5.16 ± 14.25 1.51b, 0.224
  Walking 11.03 ± 18.31 13.92 ± 25.17 14.20 ± 17.63 0 11.29 ± 14.9 1.07b, 0.372

Obesity Status categories were developed using the International Obesity Taskforce estimates that correspond to overweight (25 kg/m2) and obesity (30 kg/m2) at 18 years of age.

a, b refer to the test statistic used to test for significant differences between quartiles.

dSelf-reported physical activity logs were completed by the adolescents, the data reported represent the average minutes spent in the most frequently reported activities for boys and girls.

Dulin-Keita et al.

Dulin-Keita et al. BMC Public Health 2013 13:440   doi:10.1186/1471-2458-13-440

Open Data