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. Author manuscript; available in PMC: 2024 Jun 1.
Published in final edited form as: Ophthalmology. 2023 Jan 31;130(6):646–654. doi: 10.1016/j.ophtha.2023.01.015

Table 1.

Cohort Characteristics. Sociodemographic and glaucoma disease characteristics of entire cohort and stratified by frailty group.

Table 1: Cohort Characteristics

Baseline characteristics Total Non-frail or prefrail (CFIa 0–0.19) Mildly frail (CFI 0.20–0.29) Moderately and severely frail (CFI 0.30–1) p-value

Sample size, n (%) 76,260 (100.0) 60,639 (79.5) 13,006 (17.1) 2,615 (3.4)
Age, mean (SD) 78.9 (7.8) 78.3 (7.6) 81.0 (7.7) 82.6 (8.0) <.0001b
Female, n (%) 46,141 (60.5) 36,023 (59.4) 8,313 (63.9) 1,805 (69.0) <.0001c
Race, n (%)
  Non-Hispanic
  White
60,012 (78.7) 48,270 (79.6) 9,797 (75.3) 1,945 (74.4) <.0001c
  Black/
  African American
9,838 (12.9) 7,475 (12.3) 1,925 (14.8) 438 (16.7)
  Hispanic 4,089 (5.4) 2,954 (4.9) 958 (7.4) 177 (6.8)
  Asian/Pacific
  Islander
2,321 (3.0) 1,940 (3.2) 326 (2.5) 55 (2.1)
Full/partial dual eligibility for Medicare & Medicaid, n (%) 9,051 (11.9) 5,824 (9.6) 2,523 (19.4) 704 (26.9) <.0001c
Part A/B state buy-in, n (%) 8,765 (11.5) 5,705 (9.4) 2,409 (18.5) 651 (24.9) <.0001c
Full/partial Part D limited income subsidies (LIS), n (%) 10,552 (13.8) 6,934 (11.4) 2,860 (22.0) 758 (29.0) <.0001c
Two or more low-income indicator (Dual eligibility, Part A/B buy-in, Part D LIS, n (%) 9,083 (11.9) 5,850 (9.6) 2,529 (19.4) 704 (26.9) <.0001c
Combined comorbidity score, mean (SD) 1.1 (2.2) 0.5 (1.5) 2.8 (2.5) 5.5 (3.0) <.0001b
Glaucoma severity, n (%)
  Indeterminate 631 (0.8) 461 (0.8) 137 (1.1) 33 (1.3) <.0001c
  Mild 8,116 (10.6) 6,757 (11.1) 1,168 (9.0) 191 (7.3)
  Moderate 9,106 (11.9) 7,336 (12.1) 1,533 (11.8) 237 (9.1)
  Severe 6,822 (8.9) 5,360 (8.8) 1,214 (9.3) 248 (9.5)
  Unspecified 3,641 (4.8) 2,837 (4.7) 641 (4.9) 163 (6.2)
  No severityrelated diagnosis code 47,944 (62.9) 37,888 (62.5) 8,313 (63.9) 1,743 (66.7)
a

Claims-based frailty index

b

Analysis of variance (ANOVA)

c

Chi-squared