Table 3.

Treatment course by race and case–control status

Treatment course	Black cases (n=37)	Black controls (n=37)	White cases (n=19)	White controls (n=19)	p-values
					Black cases versus black controls	White cases versus white controls
Glaucoma medications added, mean (SD), n	1.0 (0.8), 4	0.8 (0.7), 17	−0.5 (1.8), 6	0.8 (1.3), 12	0.552	0.055
Glaucoma medications added, excluding patients with surgery or laser, mean (SD), n	1.3 (0.6), 3	0.7 (0.6), 13	−0.5 (1.8), 6	0.8 (1.3), 12	0.131	0.055
Glaucoma surgeries at Duke, mean (SD)
Total surgeries	2.4 (1.6)	1.2 (1.8)	0.9 (0.8)	0.6 (1.0)	0.001	0.139
Trabeculectomies	1.1 (1.0)	0.5 (0.8)	0.4 (0.8)	0.3 (0.6)	0.009	0.708
Tube surgeries	0.9 (1.1)	0.4 (0.7)	0.6 (1.0)	0.2 (0.4)	0.012	0.344
Revisions	0.4 (0.6)	0.3 (0.8)	0.1 (0.3)	0.2 (0.5)	0.428	0.956
Transscleral diode or ECPC	0.4 (0.8)	0.0 (0.2)	0.1 (0.3)	0.0 (0.0)	0.011	0.152
Laser trabeculoplasty, n (%)	5 (14)	9 (24)	3 (16)	2 (11)	0.252	0.934
Other ocular procedure, n (%)	13 (36)	9 (24)	8 (42)	4 (21)	0.315	0.295

Notes: Cases, patients who have gone blind from primary open-angle glaucoma; controls, patients with primary open-angle glaucoma who are not blind.

Abbreviation: ECPC, endocyclophotocoagulation.