Table 2.

Baseline Characteristics of Medicare Beneficiaries with Rhegamatogenous Retinal Detachment

	Scleral Buckle	Pars Plana Vitrectomy		Pneumatic Retinopexy		Laser or Cryotherapy		Full sample
	Mean	Mean	P value	Mean	P value	Mean	P value	Mean
Severity (rates unless otherwise noted)
Severity of RD (1–3)	1.972	2.016	0.048	1.785	<0.0001	1.597	<0.0001	1.907
Proliferative vitreoretinopathy	0.006	0.023	<0.0001	0.002	0.017	0.005		0.012
RD risk factors (rates)
Cataract	0.412	0.392		0.405		0.449	0.021	0.409
Cataract surgery	0.452	0.535	<0.0001	0.397	0.001	0.288		0.451
Myopia	0.026	0.033		0.026		0.027		0.029
Lattice degeneration	0.019	0.028	0.023	0.011	0.040	0.037	0.002	0.024
Prior intraocular procedure	0.062	0.147	<0.0001	0.088	0.006	0.048		0.094
Prior severe complication	0.006	0.032	<0.0001	0.003		0.003		0.015
Prior visual impairment	0.047	0.057		0.041		0.033	0.018	0.048
Demographic characteristics (rates unless otherwise noted)
Male	0.516	0.511		0.546		0.522		0.519
Black	0.018	0.041	<0.0001	0.011		0.043	<0.0001	0.030
Other race	0.015	0.025	0.003	0.021		0.040	<0.0001	0.023
Age (years)	75.062	76.036	<0.0001	74.438	0.002	74.023	<0.0001	75.185
Medicaid	0.052	0.077	<0.0001	0.050		0.055		0.061
Observations	3248	3406		1151		1411		9216

Notes: Comparison group is Scleral Buckle. p-values present when p<0.05