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Table 1 Characteristics of obese subjects and healthy controls

From: Adolescent obesity, joint pain, and hypermobility

Variable

Obese (n = 91)

Controls (n = 51)

p value

Age, years (median)

12.2

14.5

<0.001

 Range

10.2 to 17.6

10.2 to 17.9

 

Sex, % male

35.2

37.3

0.80

Race, % black

64.8

64.7

0.99

% Tanner 4 or 5

47.7

70.6

0.055

Physical activity (mean cpm, sd)*

272.8 ± 108.2

255.6 ± 92.3

0.38

BMI (mean)

33.9 ± 4.90

19.70 ± 2.00

<0.001

 Range

26.3 to 49.6

15.1 to 23.2

 

BMI-Z- score (mean)

2.38 ± 0.23

- 0.02 ± 0.62

<0.001

 Range

1.93 to 2.88

-1.54 to 0.99

 
  1. Statistical analysis for continuous variables was performed using t-tests for normally distributed variables. For categorical variables, the Chi 2 test was used. SD = standard deviation.
  2. Physical activity is in counts per minute (cpm) of physical activity.
  3. *Physical activity data were available on 125 subject (obese = 82, non obese = 43).
  4. Body Mass index (BMI).
  5. BMI-Z-score adjusted for age and gender based on US 2000 CDC growth charts.