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. Author manuscript; available in PMC: 2023 Dec 22.
Published in final edited form as: Cornea. 2022 Feb 18;42(1):60–65. doi: 10.1097/ICO.0000000000002993

TABLE 1.

Social and Clinical Characteristics of Patients With Keratoconus

Frequency Percentage
Race
 White 412 45
 Non-White 507 55
Language
 English 971 94
 Non-English 67 6
Insurance
 Private 643 63
 Medicaid 208 20
 Medicare 169 17
Employment
 Employed/retired 443 65
 Unemployed/disabled 241 35
Age (yr)
 ≤18 80 9
 18–35 293 34
 35–50 241 28
 ≥50 259 30
Sex
 Female 362 35
 Male 674 65
Diabetes
 Yes 89 9
 No 879 91
Down syndrome
 Yes 20 2
 No 1018 98
Obstructive sleep apnea
 Yes 62 6
 No 906 94
Atopy
 Yes 190 18
 No 848 82
Dry eye
 Yes 42 4
 No 926 96
Tobacco use
 Yes 95 10
 No 873 90
Body mass index
 Underweight 14 3
 Healthy 182 35
 Overweight 164 31
 Obese 167 32