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Table 1 Baseline characteristics between AMS and non-AMS groups

From: The impact of physical fitness and body mass index in children on the development of acute mountain sickness: A prospective observational study

Patient characteristics

Total (N = 179)

AMS group (n = 80)

Non-AMS group (n = 99)

p value

Gender

   

0.004*

Male, n (%)

102 (57%)

55 (68.8%)

47 (47.5%)

 

Female, n (%)

77 (43%)

25 (31.2%)

52 (52.5%)

0.300

Mean age, years

11.8 ± 0.4

11.8 ± 0.5

11.8 ± 0.4

Mean body weight, kg

45.0 ± 10.4

48 ± 11.8

42.6 ± 8.4

<0.001*

Mean body height, cm

152.0 ± 7.2

152.6 ± 7.8

151.5 ± 6.6

0.311

Mean body mass indexa, kg/m2

19.4 ± 3.7

20.5 ± 4.2

18.4 ± 2.8

<0.001*

Mean BMI z-scoreb

2.8 ± 0.3

2.8 ± 0.2

2.7 ± 0.3

0.002*

Physical fitness index

67.9 ± 9.7

67.8 ± 10.1

68.0 ± 9.3

0.900

  1. * Significantly different between AMS and non-AMS groups, respectively.
  2. AMS, acute mountain sickness; BMI, body mass index.
  3. aBMI = weight in kilograms divided by the square of the height in meters.
  4. bBMI z-score was calculated as outlined by Center for Disease Control (CDC) guidelines (http://www.cdc.gov/growthcharts/percentile_data_files.htm).
  5. Continuous variable was presented as mean ± SD, and compared the differences between with and without AMS using independent t-test.
  6. Categorical variable was presented as count and percentage, and compared the differences between with and without AMS using Chi-square test.