Table 5.
Comparison of signs and symptoms and history of VTE between high and low altitude dwellers.
| Variables | High altitude dwellers N = 111 |
Low altitude dwellers N = 123 |
p values |
|---|---|---|---|
| Signs and symptoms | |||
| Lower limb swelling | 82 (73.9%) | 2 (1.6%) | <0.001 |
| Lower limb pain | 77 (69.4%) | 0 | <0.001 |
| Shortness of breath | 26 (23.4%) | 10 (8.1%) | 0.001 |
| Hemoptysis | 4 (3.6%) | 1 (0.8%) | 0.140 |
| Headache | 2 (1.8%) | 8 (6.5%) | 0.076 |
| Blurring of vision | 1 (0.9%) | 0 | 0.291 |
| History | |||
| Smoking | 0 | 6 (4.9%) | 0.018 |
| Trauma | 5 (4.5%) | 6 (4.9%) | 0.893 |
| Fracture | 5 (4.5%) | 1 (0.8%) | 0.074 |
| Immobilization | 12 (10.8%) | 1 (0.8%) | 0.001 |
| Sickle Cell Anemia | 3 (2.7%) | 1 (0.8%) | 0.265 |
| Malignancy | 3 (2.7%) | 3 (2.4%) | 0.899 |
| Pregnancy | 13 (11.7%) | 0 | <0.001 |
| Surgery | 13 (11.7%) | 5 (4.1%) | 0.028 |
| Oral contraceptive use | 11 (9.9%) | 0 | <0.001 |
| Hormone replacement tx | 1 (0.9%) | 0 | 0.291 |
| Diabetes | 16 (14.4%) | 19 (15.4%) | 0.825 |
| Hypertension | 12 (10.8%) | 21 (17.1%) | 0.169 |
| Heart failure | 3 (2.7%) | 0 | 0.066 |
| Lung disease | 4 (3.6%) | 4 (3.3%) | 0.883 |
| Post-thrombotic stroke | 8 (7.2%) | 59 (47.9%) | <0.001 |