Table 1.

Baseline demographic characteristics for XEN and trab groups

		XEN		Trab		p value
		Mean	SD	Mean	SD
n		90		89
Age (years)		74.5	7.6	68.1	8.2	<0.001	t-test
Sex (female)	n	55		36
	%	61.1%		40.4%		0.03	Fisher's exact
Race	White	72		34		<0.001	Fisher's exact
	Black	4		29		<0.001	Fisher's exact
	Asian	5		15		0.02	Fisher's exact
	Hispanic	9		9		1	Fisher's exact
	Native American	0		1		0.50	Fisher's exact
Glaucoma diagnosis	POAG	74		76		0.69	Fisher's exact
	LTG	10		5		0.28	Fisher's exact
	PXF	3		3		1	Fisher's exact
	Pigmentary	1		2		0.62	Fisher's exact
	Secondary	2		3		0.68	Fisher's exact
Prior eye surgery	Cataract surgery	56		32		<0.001	Fisher's exact
	PPV	5		5		1	Fisher's exact