Table 1.
Comparison of Patients Who Participated Compared with Those Who Did Not Participate
| Total (n = 2274) | Signed Up (n = 732) | Declined (n = 2042) | P Value | Adjusted P Value | |
|---|---|---|---|---|---|
| Age (yrs), mean ± SD | 68 ± 13 | 62 ± 14 | 69 ± 13 | 0.021 | |
| Female gender, no. (%) | 1237 (45) | 279 (38) | 958 (47) | < 0.001 | |
| Race, no. (%) | |||||
| Chinese | 1992 (72) | 398 (54) | 1594 (78) | 0.021 | 0.12∗ |
| Indian | 245 (9) | 65 (9) | 180 (9) | ||
| Malay | 235 (8) | 57 (8) | 178 (9) | ||
| Others | 302 (11) | 212 (29) | 90 (4) | ||
| Living with family, no. (%) | 2626 (95) | 719 (98) | 1907 (93) | 0.014 | 0.021∗ |
| Diagnosis, no. (%) | |||||
| DME | 263 (9) | 136 (19) | 127 (6) | < 0.001 | < 0.001† |
| DR | 571 (21) | 201 (27) | 370 (18) | ||
| Neovascular AMD | 881 (32) | 136 (19) | 745 (36) | ||
| Nonneovascular AMD | 330 (12) | 138 (19) | 192 (9) | ||
| RVO | 400 (14) | 73 (10) | 327 (16) | ||
| Other | 329 (12) | 48 (7) | 281 (14) | ||
| Bilateral eyes affected, no. (%) | 1017 (37) | 296 (40) | 721 (35) | 0.072 | 0.32‡ |
| VA (letters) mean ± SD | |||||
| Better eye | 70 ± 13 | 69 ± 14 | 74 ± 12 | < 0.001 | 0.93‡ |
| Worse eye | 50 ± 25 | 49 ± 25 | 61 ± 22 | < 0.001 | < 0.001‡ |
| Patients with intended follow-up (> 4 mos), no. (%) | 803 (29) | 395 (54) | 408 (20) | < 0.001 | < 0.001‡ |
| Patients receiving active treatment, no. (%) | 984 (35) | 152 (21) | 832 (41) | < 0.001 | 0.023‡ |
AMD = age-related macular degeneration; DME = diabetic macular edema; DR = diabetic retinopathy; RVO = retinal vein occlusion; SD = standard deviation; VA = visual acuity.
∗
Adjusted for age and gender.
†
Adjusted for age, gender, and ethnicity.
‡
Adjusted for age, gender, ethnicity, and diagnosis.