Table 1 Clinical and laboratory... | American Society of Hematology

Table 1

Clinical and laboratory characteristics of surgical patients with ET and PV at diagnosis

Characteristic	PV, n = 105	ET, n = 150	P
Male/female, no./no.	66/39	62/88	.001*
Age, y; median (range)	61 (28-85)	59 (20-84)	.13
Presence of at least 1 cardiovascular risk factor, no. (%)†	62 (59)	66 (44)	.02*
Previous arterial thrombosis, no. (%)	14 (10.7)	22 (11.7)	.79
Previous venous thromboembolism, no. (%)	3 (2.8)	6 (4)	.62
Symptoms at presentation, no. (%)
None	72 (68.5)	107 (71.3)	.36
Microvascular disturbances	28 (26.6)	33 (22.0)	.45
Arterial thrombosis	2 (1.9)	6 (4.0)	.47
Venous thromboembolism	1 (0.9)	3 (2)	.64
Hemorrhage	2 (1.9)	1 (0.7)	.57
Hemoglobin level, g/L, mean plus or minus SD	180 ± 19.3	140 ± 14	<.001*
Hematocrit level, %, mean plus or minus SD	55.1 ± 6.1	41.7 ± 3.6	<.001*
Leukocyte, × 10⁹/L, mean plus or minus SD	10.2 ± 4	10.2 ± 3.8	.90
Platelet, × 10⁹/L, mean plus or minus SD	516 ± 239	911 ± 376	<.001*

Characteristic	PV, n = 105	ET, n = 150	P
Male/female, no./no.	66/39	62/88	.001*
Age, y; median (range)	61 (28-85)	59 (20-84)	.13
Presence of at least 1 cardiovascular risk factor, no. (%)†	62 (59)	66 (44)	.02*
Previous arterial thrombosis, no. (%)	14 (10.7)	22 (11.7)	.79
Previous venous thromboembolism, no. (%)	3 (2.8)	6 (4)	.62
Symptoms at presentation, no. (%)
None	72 (68.5)	107 (71.3)	.36
Microvascular disturbances	28 (26.6)	33 (22.0)	.45
Arterial thrombosis	2 (1.9)	6 (4.0)	.47
Venous thromboembolism	1 (0.9)	3 (2)	.64
Hemorrhage	2 (1.9)	1 (0.7)	.57
Hemoglobin level, g/L, mean plus or minus SD	180 ± 19.3	140 ± 14	<.001*
Hematocrit level, %, mean plus or minus SD	55.1 ± 6.1	41.7 ± 3.6	<.001*
Leukocyte, × 10⁹/L, mean plus or minus SD	10.2 ± 4	10.2 ± 3.8	.90
Platelet, × 10⁹/L, mean plus or minus SD	516 ± 239	911 ± 376	<.001*

indicates Mann-Whitney test was adopted to calculate P values of continuous variables.

†

Diabetes on treatment, hypercholesterolemia on treatment, arterial hypertension on treatment, previous AT, cardiovascular diseases (atrial fibrillation, valvular or coronary disease), or smoking.

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