Table 1.

Baseline characteristics and comorbidities

	CLL group		Control group
	Mean	STD	Mean	STD	p-Value
Baseline characteristics
Age	66.1	(13.2)	66.1	(13.2)
Sex (male = 1)	66.9%		66.9%
Mortality (per calendar year)	4.9%		1.7%
Elixhauser comorbidity groups
Congestive heart failure	12.7%		10.3%		<.001
Cardiac arrhythmias	20.9%		18.4%		<.001
Valvular disease	10.3%		8.5%		<.001
Pulmonary circulation  disorders	3.0%		2.0%		<.001
Peripheral vascular disorders	13.2%		11.8%		<.001
Hypertension uncomplicated	52.6%		53.3%		0.214
Hypertension complicated	9.1%		8.4%		0.032
Paralysis	2.4%		2.1%		0.030
Other neurological disorders	4.5%		4.4%		0.469
Chronic pulmonary disease	23.8%		18.4%		<.001
Diabetes uncomplicated	19.5%		18.0%		0.001
Diabetes complicated	8.0%		7.1%		0.003
Hypothyroidism	9.2%		7.6%		<.001
Renal failure	10.4%		7.9%		<.001
Liver disease	14.1%		12.2%		<.001
Peptic ulcer disease  excluding bleeding	2.4%		2.0%		0.010
AIDS/HIV	0.2%		0.1%		<.001
Lymphoma	27.7%		0.8%		<.001
Metastatic cancer	9.6%		3.2%		<.001
Solid tumor without  metastasis	22.9%		17.1%		<.001
Rheumatoid arthritis/collagen  vascular diseases	8.1%		6.6%		<.001
Coagulopathy	11.2%		3.4%		<.001
Obesity	9.6%		10.2%		0.062
Weight loss	3.2%		1.1%		<.001
Fluid and electrolyte  disorders	9.3%		4.5%		<.001
Blood loss anemia	0.5%		0.4%		0.030
Deficiency anemias	4.5%		2.9%		<.001
Alcohol abuse	1.7%		2.2%		0.003
Drug abuse	0.5%		0.4%		0.136
Psychoses	1.0%		0.8%		0.018
Depression	17.3%		13.4%		<.001
Elixhauser score	10.0	(10.5)	5.2	(7.9)	<.001

CLL Chronic lymphocytic leukemia, STD Standard deviation.