TABLE 5.
Comparison of male characteristics according to erythrocytosis profiles (Classification 2, calculated threshold).
| Variable | Without EE n (%) or median [IQR] | With EEn (%) or median [IQR] |
| n (%) | 1,150 (84.6) | 209 (15.4) |
| Age (years) | 31.5 [23; 38] | 38 [34; 45]* |
| Ethnic group | ||
| Aymara | 49 (4.3) | 13 (6.2) |
| Quechua | 1,101 (95.7) | 196 (93.8) |
| Residency in La Rinconada (years) | 3 [2; 5] | 3 [3; 5] |
| Hematocrit (%) | 60 [55; 65] | 75 [74; 77]* |
| Spo2 (%) | 82 [78; 85] | 81 [77; 84]* |
| Heart rate (bpm) | 87 [75; 94] | 82 [73; 90]* |
| Diastolic blood pressure (mm Hg) | 70 [70; 80] | 70 [70; 80] |
| Systolic blood pressure (mm Hg) | 100 [100; 110] | 100 [100; 120] |
| Breathlessness/palpitations | ||
| 0 | 873 (75.9) | 173 (82.8) |
| 1 | 161 (14.0) | 19 (9.1) |
| 2–3 | 116 (10.1) | 17 (8.1) |
| Sleep disturbance | ||
| 0 | 931 (81.0) | 196 (93.8)* |
| 1–3 | 219 (19.0) | 13 (6.2)* |
| Cyanosis | ||
| 0 | 853 (74.2) | 161 (77.0) |
| 1 | 198 (17.2) | 35 (16.7) |
| 2–3 | 99 (8.6) | 13 (6.2) |
| Dilatation of veins | ||
| 0 | 949 (82.5) | 176 (84.2)* |
| 1 | 134 (11.7) | 25 (12.0)* |
| 2 | 55 (4.8) | 2 (1.0)* |
| 3 | 12 (1.0) | 6 (2.9)* |
| Paresthesia | ||
| 0 | 871 (75.7) | 164 (78.5) |
| 1 | 222 (19.3) | 32 (15.3) |
| 2–3 | 57 (5.0) | 13 (6.2) |
| Headache | ||
| 0 | 870 (75.7) | 183 (87.6)* |
| 1–3 | 280 (24.3) | 26 (12.4)* |
| Tinnitus | ||
| 0 | 127 (11.0) | 16 (7.7)* |
| 1 | 841 (73.1) | 173 (82.8)* |
| 2 | 146 (12.7) | 11 (5.3)* |
| 3 | 36 (3.1) | 9 (4.3)* |
EE, excessive erythrocytosis; IQR, interquartile range; SpO2, pulse oxygen saturation. Scores of symptom severity were grouped when the number of subjects per score was too small to allow statistical analysis. * Significantly different from subjects without EE (p < 0.05).