Table 1.
Demographics of the control individuals and patients with high-altitude polycythemia
| Variables | Han | Tibetan | ||
|---|---|---|---|---|
| Case (n = 70) | Control (n = 30) | Case (n = 70) | Control (n = 30) | |
| Male | 35 | 15 | 35 | 15 |
| Female | 35 | 15 | 35 | 15 |
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