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. Author manuscript; available in PMC: 2019 Jul 8.
Published in final edited form as: Ophthalmology. 2016 Oct 19;123(12):2537–2544. doi: 10.1016/j.ophtha.2016.09.001

Table 2.

Demographic parameters for 689 participants.

Parameter Pennsylvania Indiana Ohio All
Sex 193 female, 122 male 142 female, 106 male 82 female, 44 male 418 female, 272 male
Age, mean ±SD 65.6 ±10.5 65.5 ±11.4 70.1 ±9.9 66.3±11.0