Table 1 Demographic and laboratory characteristics of 136 patients with a diagnosis of secondary erythrocytosis at MDACC.

From: Potential limitations of diagnostic standard codes to distinguish polycythemia vera and secondary erythrocytosis

JAK-2 Mutation (V617F PCR) Status

No

%

Positive

2

1.5

Negative

134

98.5

Characteristic

Median

IQR

Age (years)

56.2

66.0–49.0

Male %

57.7

 

Female %

42.3

 

Serum EPO value (mIU/mL)

19.3

8.8–22.6

Hematocrit %

49.1

24.1–62.0

Hemoglobin (g/dL)

16.7

8.0–20.7

Etiology

Frequency

Percent

Idiopathic erythrocytosis

56

41.18

Hypoxia

44

32.35

Iatrogenic

15

11.03

Autonomous EPO

10

7.35

Multifactorial

6

4.41

Relative polycythemia

5

3.68

Total

136

100

  1. IQR: Interquartile Range.
  2. EPO: Erythropoietin.
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