Cumulative probability and risk analysis for Nd:YAG laser capsulotomy

Table 1 Patient demographics and pre-operative and operative clinical information

Number eyes (patients)	1354 (1354)
Age at time of cataract surgery, mean ± SD (n)	69 ± 10 (1354) range 38-94
Months follow-up, mean ± SD	19.4 ± 17 mo
Gender, % male (n)	97 (1318)
Ethnicity
% White, non-Hispanic (n)	63 (315)
% Black, non-Hispanic	23 (113)
% White, Hispanic	14 (68)
Diabetes, % yes (n)	35 (477)
Glaucoma, % yes (n)	33 (452)
Ocular trauma, % yes (n)	5 (62)
Uveitis, % yes (n)	4 (57)
Selected lens type, % (n)
Monofocal, 3-piece (MA60)	29 (389)
Monofocal and toric, 1-piece (SN60, SN6A)	69 (937)
Anterior chamber lens (MTA)	1.6 (22)
Surgeon level, % (n)
PGY2 surgeon	56 (757)
PGY3 surgeon	33 (437)
PGY5 or higher (Experienced surgeon)	11 (148)
Sulcus lens placed, % (n)	6.6 (89)
Anterior vitrectomy performed, % (n)	4 (54)
Planned Pars Plana Vitrectomy performed, % (n)	4 (51)
Unplanned Pars Plana Vitrectomy performed, % (n)	1 (10)
Concomitant glaucoma surgery	2.7 (36)
Posterior capsular rupture	2.9 (39)

Experienced surgeon: Attending.

Table 2 Results of cox proportional hazard analysis displaying risk factors found to independently increase the risk of post-operative capsulotomy

Variable	Uni-variable		Multi-variable
	HR (95%CI)	P value	HR (95%CI)	P value
Decade of age1	0.68 (0.53-0.86)	0.003	0.74 (0.61-0.90)	0.007
Surgeon
PGY3/PGY2	2.83 (1.63-4.9)	< 0.0005	2.39 (1.40-4.09)	0.002
PGY5/PGY2	6.03 (2.96-12.3)	< 0.0005	4.32 (1.89-9.87)	0.001
Sulcus lens, yes/no	3.43 (1.9-6.16)	< 0.0005	2.57 (1.32-4.99)	0.005
Ocular trauma, yes/no	2.84 (1.41-5.72)	0.003	2.34 (1.13-4.83)	0.020

¹Younger patients are more likely to undergo YAG capsulotomy than older patients.