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Table 1 Descriptive characteristics of the analytical sample

From: A catalog of validity indices for step counting wearable technologies during treadmill walking: the CADENCE-Kids study

Variables All (N = 117) Children, 6–12 years (n = 53) Adolescents, 13–17 years (n = 40) Young Adults, 18–20 years (n = 24)
  Mean SD Mean SD Mean SD Mean SD
Age (years) 13.17 4.22 9.21 1.95 14.93 1.40 19.00 0.83
Weight (kg) 55.94 21.85 41.19 14.67 67.97 21.60 68.43 14.60
Height (cm) 155.66 16.47 141.89 12.44 165.29 8.60 170.01 8.92
Leg length (cm) 73.94 9.42 67.12 8.16 79.10 6.46 80.40 5.41
BMI (kg/m2) 22.41 6.25 20.04 5.17 24.78 7.15 23.66 5.06
  n % n % n % n %
Sex (female) 59 50.4 26 49.1 21 52.5 12 50.0
BMI classificationsa
 Underweight 6 5.1 3 5.7 1 2.5 2 8.3
 Normal weight 67 57.3 27 50.9 22 55.0 18 75.0
 Overweight 18 15.4 9 17.0 7 17.5 2 8.3
 Obese 26 22.2 14 26.4 10 25.0 2 8.3
Race/ethnicity
 African-American 41 35.0 21 39.6 13 32.5 7 29.2
 Caucasian 73 62.4 30 56.6 26 65.0 17 70.8
 Other 3 2.6 2 3.8 1 2.5 0 0.0
  1. BMI body mass index. aBMI classifications defined as BMI < 5th percentile (underweight), 5th ≤ BMI < 85th percentile (normal weight), 85th ≤ BMI < 95th percentile (overweight), and BMI ≥ 95th percentile (obese)