Table 1.

Characteristics of study population.

	N	%
GENDER†
Females	62,647	59.9
Males	41,527	39.7
AGE
Mean	46.0 ± 16.1 years
Range	18–89 years
ETHNICITY
African American	6,762	6.5
Asian	251	0.2
Caucasian	37,571	36
Hispanic	2,072	2
Other	1,308	1.3
Not reported‡	56,545	54.1
Total	104,509	100

^†335 patients did not have gender information.

^‡Not reported indicates that ethnicity information was not provided.