Table 1.
Characteristics of Patients Who Participated and Who Declined
| Contacted (n = 303) | Declined (n = 195) | Participated (n = 108) | P Value | |
|---|---|---|---|---|
| Age (yrs) | 0.17∗ | |||
| Mean ± SD | 54 ± 17 | 55 ± 16 | 52 ± 17 | |
| Range | 18–89 | 18–89 | 19–83 | |
| Gender | 0.46† | |||
| Female | 188 (62) | 118 (61) | 70 (65) | |
| Male | 115 (38) | 77 (39) | 38 (35) | |
| Race | 0.64† | |||
| Asian | 9 (3) | 6 (3) | 3 (3) | |
| Black | 42 (14) | 29 (15) | 13 (12) | |
| Other | 2 (1) | 1 (1) | 1 (1) | |
| Unknown | 28 (9) | 16 (8) | 12 (11) | |
| White | 222 (73) | 143 (73) | 79 (73) | |
| Clinic department | 0.17† | |||
| Comprehensive | 63 (21) | 33 (17) | 30 (28) | |
| Cornea | 48 (16) | 31 (16) | 17 (16) | |
| Glaucoma | 60 (20) | 40 (21) | 20 (19) | |
| Neuro-ophthalmology | 32 (11) | 21 (11) | 11 (10) | |
| Oculoplastics | 26 (9) | 15 (8) | 11 (10) | |
| Retina | 74 (24) | 55 (28) | 19 (18) | |
| Primary diagnosis category | 0.18† | |||
| Cataract | 17 (6) | 12 (6) | 5 (5) | |
| Corneal disease | 36 (12) | 23 (12) | 13 (12) | |
| Glaucoma | 57 (19) | 36 (18) | 21 (19) | |
| Macular disease | 15 (5) | 11 (6) | 4 (4) | |
| Neuro-ophthalmology disease | 29 (10) | 20 (10) | 9 (8) | |
| None | 11 (4) | 11 (6) | 0 (0) | |
| Oculoplastics disease | 19 (6) | 11 (6) | 8 (7) | |
| Refractive error | 43 (14) | 21 (11) | 22 (20) | |
| Retinal vascular disease | 17 (6) | 11 (6) | 6 (6) | |
| Uveitis | 15 (5) | 12 (6) | 3 (3) | |
| Visual impairment/screening | 44 (15) | 27 (14) | 17 (16) | |
| Area deprivation index score (n = 300) | 0.329 ± 0.097 | 0.336 ± 0.096 | 0.317 ± 0.099 | 0.11∗ |
| Intraocular pressure (mmHg) | ||||
| Right eye (n = 254) | 15.3 ± 4.0 | 15.6 ± 4.1 | 14.8 ± 3.6 | 0.16∗ |
| Left eye (n = 255) | 15.4 ± 3.9 | 15.7 ± 3.9 | 14.9 ± 3.7 | 0.06∗ |
| Visual acuity of better-seeing eye (n = 264) | ||||
| ETDRS letters | 80.9 ± 8.7 | 80.0 ± 9.6 | 82.2 ± 6.7 | 0.12∗ |
| Snellen equivalent | 20/24 | 20/25 | 20/23 | |
| Visual acuity of worse-seeing eye (n = 264) | ||||
| ETDRS letters | 75.3 ± 11.4 | 74.0 ± 12.1 | 77.4 ± 9.9 | 0.01∗‡ |
| Snellen equivalent | 20/31 | 20/33 | 20/28 |
ETDRS = Early Treatment Diabetic Retinopathy Study; SD = standard deviation.
Data are presented as mean ± SD or no. of patients (%), unless otherwise indicated.
∗
Wilcoxon test.
†
Pearson test.
‡
Statistically significant.