Table 1 Risk factors for thrombosis... | American Society of Hematology

Table 1

Risk factors for thrombosis among 605 patients with ET

	Arterial thrombosis at diagnosis	Arterial thrombosis during follow-up	Venous thrombosis at diagnosis	Venous thrombosis during follow-up
No. patients	104	133	35	45
Leukocyte count of at least 15 × 10⁹/L, univariate/multivariable P	.002/.009	.98	.01/.01	.04/.46
Leukocyte count above 8.7 × 10⁹/L, univariate/multivariable P	<.001/.04	.09	.17	.73
Previous arterial event, univariate/multivariable P	.02/.13	<.001/<.001	.23	.12
Previous venous event, univariate/multivariable P	.31	.02/.02	<.001/<.001	<.001/.02
Major hemorrhage, univariate/multivariable P	.09	.44	<.0001/.02	.23
Hemoglobin level, univariate/multivariable P	<.001†/.001†	.59	.002‡/.004‡	.15
Advanced age, univariate/multivariable P	.02/.23	.19	.16	.37
Hypertension, univariate/multivariable P	.01/.19	.1	.62	.54
JAK2V617F (n = 187),* univariate/multivariable P	.51	.37	.16	.03/.09
Current smoking, univariate/multivariable P	.19	.49	.15	.86

	Arterial thrombosis at diagnosis	Arterial thrombosis during follow-up	Venous thrombosis at diagnosis	Venous thrombosis during follow-up
No. patients	104	133	35	45
Leukocyte count of at least 15 × 10⁹/L, univariate/multivariable P	.002/.009	.98	.01/.01	.04/.46
Leukocyte count above 8.7 × 10⁹/L, univariate/multivariable P	<.001/.04	.09	.17	.73
Previous arterial event, univariate/multivariable P	.02/.13	<.001/<.001	.23	.12
Previous venous event, univariate/multivariable P	.31	.02/.02	<.001/<.001	<.001/.02
Major hemorrhage, univariate/multivariable P	.09	.44	<.0001/.02	.23
Hemoglobin level, univariate/multivariable P	<.001†/.001†	.59	.002‡/.004‡	.15
Advanced age, univariate/multivariable P	.02/.23	.19	.16	.37
Hypertension, univariate/multivariable P	.01/.19	.1	.62	.54
JAK2V617F (n = 187),* univariate/multivariable P	.51	.37	.16	.03/.09
Current smoking, univariate/multivariable P	.19	.49	.15	.86

n = 187.

Association with a higher hemoglobin level.

Association with a lower hemoglobin level.