Table 1.

Baseline characteristics of BLCA patients and healthy individuals involved in this study.

BLCA Serum samples
BLCA Patients Characteristics
Ethnicity	African American (n=17; 25%)
	European American (n=49; 74%)
	Unknown (n=1; 1%)
Smoking status	n=26 (39%; Never smoker)
	n=31 (46%; Former-smoker)
	n=10 (15%; Current smoker)
Gender	n= 46(69%; Male)
	n=21(31%; Female)
Cohorts	NCI (n= 59; 88%)
	Georgia (n =8; 12%)
T-stage	Ta=1(1%)
	T1=1(1%)
	T2=2(2%)
	T3=1(1%)
	T4=62(95%)
Age	≤50 years= 8(12%)
	>50 years= 59 (88%)
LVI*	LVI-Positive=59(89%)
	LVI-Negative=8(11%)
Number of packets per year	Current Smokers
	<20Pack/year=5(50%)	≥20Pack/year=5(50%)
Duration of cessation	Former Smokers
	Quit <20years ago=9(29%)	Quit ≥20years ago=22(71%)
Case Control serum samples
Characteristics
Ethnicity	African American (n=14; 70%)
	European American (n=3; 15%)
	Hispanic (n=3; 15%)
Smoking status	n=9 (45%; Never smoker)
	n=7 (35%; Former-smoker)
	n=4 (20%; Current smoker)
Gender	n=10 (50%; Male)
	n=10 (50%; Female)

^*Lymphovascular invasion