Table 1.
Clinic characteristics in Han lowlanders, Han migrants and native Tibetans.
|
Han lowlanders (n = 82) |
Han migrants <1 year (n = 64) |
Han migrants > 5 years (n = 71) |
Tibetans (n = 75) |
p | |
|---|---|---|---|---|---|
| Age (year) | 25.3 ± 3.3 | 24.8 ± 3.3 | 26.3 ± 2.9 | 25.6 ± 4.2 | 0.086 |
| Height (cm) | 172.6 ± 5.2 | 173.4 ± 5.2 | 171.6 ± 6 | 171.9 ± 5.1 | 0.216 |
| Weight (kg) | 64.6 ± 4.9 | 66.4 ± 7.9 | 66.4 ± 7.9 | 62.4 ± 7‡ | 0.002 |
| BSA (m2) | 1.8 ± 0.1 | 1.83 ± 0.1 | 1.81 ± 0.1 | 1.77 ± 0.1‡ | 0.010 |
| BMI (kg/m2) | 21.7 ± 1.5 | 22.1 ± 2.2 | 22.5 ± 2.3 | 21.1 ± 2.1 | 0.001 |
| HR (beats/min) | 68.5 ± 6.1 | 80.2 ± 7.9* | 78.8 ± 7† | 73.5 ± 6.5‡ | 0.000 |
| Systolic BP (mmHg) | 113.3 ± 7.5 | 120.5 ± 6.4* | 128.1 ± 8.5† | 115.9 ± 8.4‡ | 0.000 |
| Diastolic BP (mmHg) | 70.3 ± 4.5 | 74.8 ± 4.6* | 79.3 ± 5.2† | 71.8 ± 5.8‡ | 0.001 |
| Mean BP (mmHg) | 84.6 ± 4.8 | 90 ± 4.4* | 95.6 ± 5.6† | 86.5 ± 5.7‡ | 0.000 |
| Hb (g/l) | 140.5 ± 10.6 | 175.5 ± 9.9* | 180.5 ± 12.8† | 173.7 ± 12.4‡ | 0.000 |
| HCT (%) | 46.3 ± 5.2 | 54.1 ± 3.9* | 59.8 ± 4.9† | 53.5 ± 3.9‡ | 0.000 |
| SpO2 (%) | 97.5 ± 1 | 90.5 ± 2.2* | 90.9 ± 1.9† | 89.2 ± 2‡ | 0.000 |
Values are means ± SD. *P <0.05 short-term acclimatized Hans vs. lowlanders; P < 0.05 long-term acclimatized Hans vs. short-term acclimatized Hans; P < 0.05 Tibetans vs. long-term acclimatized Hans.
BSA, body surface area; BMI, body mass index; HR, heart rate; BP, blood pressure; Hb, hemoglobin; HCT, hematocrit; SpO2, arterial pulse oxygen saturation.