Table 1.

Demographics

	Cohort 1	Cohort 2	P-value
	Drain (n = 179)	No drain (n = 47)
Age (median, interquartile range)	63 (53–72)	59 (51–70)	0.341***
Gender			0.698**
Male	78 (44%)	19 (40%)
Race			0.132*
White	162 (90%)	37 (79%)
Black	12 (6%)	7 (15%)
Asian	1 (1%)	1 (2%)
Pacific Islander	2 (1%)	2 (4%)
Others	2 (1%)	0 (90%)
Ethnicity			0.749*
Hispanic	12 (7%)	4 (9%)

^*Fisher's exact test

^**χ²-test

^***Wilcoxon's rank sum test.