Table 1.
Demographics and PV Disease Characteristics at Enrollment for 2510 Patients
| Characteristic | Value |
|---|---|
| Age (y) | |
| Mean (SD) | 66.3 (12.3) |
| Median (range) | 67.0 (22.0–95.0) |
| Male sex | 1360 (54.2) |
| BMI (kg/m2) (n = 2502) | |
| Mean (SD) | 28.7 (5.8) |
| Median (range) | 28.0 (13.7–56.6) |
| Smoking | |
| Ever smoked | 1208 (48.1) |
| Smoking at baseline | 279 (11.1) |
| Race | |
| White | 2237 (89.1) |
| Black or African American | 143 (5.7) |
| Asian | 37 (1.5) |
| Other | 19 (0.8) |
| No information/missing | 74 (2.9) |
| Ethnicity | |
| Non-Hispanic/Latino | 2293 (91.4) |
| Hispanic/Latino | 98 (3.9) |
| No information/missing | 119 (4.7) |
| Time from PV diagnosis to enrollment (y) (n = 2485), median (range) | 4.0 (0–56.3) |
| Spleen Palpation | |
| Spleen palpation performed | 1601 (63.8) |
| Patients with palpable spleen | 282 (11.2) |
| PV Risk | |
| Low | 570 (22.7) |
| Higha | 1940 (77.3) |
| History of thrombosis (venous or arterial) | 500 (19.9) |
| Positive family history of PV | 132 (5.3) |
Data are presented as n (%) unless otherwise indicated. Sample size is 2510 unless otherwise indicated.
Abbreviations: BMI = body mass index; PV = polycythemia vera.
a
Aged ≥ 60 years and/or history of thrombotic events.