Table 1.
Baseline information and Vital signs of the patients at different altitudes.
| Tianjin | Xining | P | |
|---|---|---|---|
| Total ( n ) | 133 | 48 | |
| Altitudes (m) | 3.5 | 2,275 | |
| Race | 0.061 | ||
| Han (n, %) | 130 (97.7%) | 44 (91.7%) | |
| Other (n, %) | 3 (2.3%) | 4 (8.3%) | |
| Age (years) | 64.8 ± 8.1 | 61.0 ± 10.2 | 0.010* |
| Gender | 0.600 | ||
| Male (n, %) | 86 (64.7%) | 29 (60.4%) | |
| Female (n, %) | 47 (35.3%) | 19 (39.6%) | |
| Vital signs | |||
| Respiratory rate (times/minute) | 17 (1) | 18 (2) | <0.001* |
| Heart rate (beats/minute) | 69 (15) | 75 (12) | 0.001* |
| Body temperature (°C) | 36.5 (0.3) | 36.4 (0.4) | 0.057 |
| Oxyhemoglobin saturation (%) | 99 (1) | 97 (2) | <0.001* |
*Continuous variables are expressed as mean ± SD or median (interquartile range). Categorical variables are expressed as frequency (percentage).
*
P < 0.05 was considered statistically significant.