Outcomes of Anterior Chamber, Sulcus, and Pars Plana Glaucoma Drainage Device Placement in Glaucoma Patients

Table 6

Life table.

	Cumulative success (%) ± SE (95% confidence interval)
	IOP reduction ≥20% with 5<IOP ≤21 mmHg
	AC	S	PP
3 months	100.0 ± 0.0	100.0 ± 0.0	100.0 ± 0.0
	(100.0, 100.0)	(100.0, 100.0)	(100.0, 100.0)
n	36	30	35
6 months	97.2 ± 2.7	96.6 ± 3.4	96.6 ± 3.4
	(92.0, 100.0)	(90.1, 100.0)	(90.1, 100.0)
n	35	27	26
1 year	94.2 ± 4.0	87.8 ± 6.8	87.5 ± 6.9
	(86.7, 100.0)	(75.5, 100.0)	(75.1, 100.0)
n	31	16	17
1.5 years	94.2 ± 4.0	87.8 ± 6.8	74.9 ± 10.3
	(86.7, 100.0)	(75.5, 100.0)	(57.2, 98.1)
n	20	5	7
2 years	94.2 ± 4.0	87.8 ± 6.8	74.9 ± 10.3
	(86.7, 100.0)	(75.5, 100.0)	(57.2, 98.1)
n	3	1	4
value^a	0.2

SE = standard error; IOP = intraocular pressure; AC = anterior chamber; S = sulcus; PP = pars plana; n = number of eyes. ^aSuccess rates across the 3 treatment groups were compared using a log rank test.