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Table 1 Basic characteristics of the study groups (M(Q1, Q3))

From: EPAS1 and VEGFA gene variants are related to the symptoms of acute mountain sickness in Chinese Han population: a cross-sectional study

Characteristics Total (n = 604) AMS group (n = 320) Non-AMS group (n = 284) P-valuea
Basic demographic characteristics
 Age (year) 22 (20, 25) 23 (20, 25) 22 (20, 25) 0.210
 Height (cm) 171 (168, 175) 171 (168, 174) 172 (168, 175) 0.343
 Weight (kg) 64 (59, 68) 64 (59, 68) 63 (60, 68) 0.614
 BMI (kg/m2) 21.6 (20.2, 22.8) 21.6 (20.2, 23.0) 21.5 (20.2, 22.6) 0.313
 Smokers [n (%)] 322 (53.3) 161 (50.3) 161 (56.7) 0.117b
Physiological parameters
 HR (beat/min) 85 (78, 93) 85 (78, 94) 84 (77, 92) 0.072
 SpO2 (%) 89 (87, 90) 89 (86, 90) 89 (87, 91) 0.003*
 SBP (mmHg) 118 (110, 125) 119 (110, 126) 118 (110, 125) 0.500
 DBP (mmHg) 79 (72, 85) 80 (72, 85) 78 (71, 85) 0.356
  1. a Mann-Whitney U test; bχ2 test. * P < 0.05 indicted significant difference. AMS Acute mountain sickness; BMI Body mass index; HR Heart rate; SpO2 Pulse oxygen saturation; SBP Systolic blood pressure; DBP Diastolic blood pressure