Table 1 Baseline characteristics of the datasets
Traditional slit-lamp images | Smartphone images | |||
|---|---|---|---|---|
Reference dataset | Analysis dataset | Reference dataset | Analysis dataset | |
No. of participants | 1990 | 3433 | 50 | 102 |
Nationality, n (%) | ||||
Chinese | 1952 (98.1%) | 3370 (98.2%) | 50 (100%) | 99 (97.1%) |
Non-Chinese | 38 (1.9%) | 63 (1.8%) | 0 | 3 (2.9%) |
Age in years (mean ± s.d.) | 55.3 ± 18.0 | 66.0 ± 11.5 | 64.6 ± 11.4 | 62.0 ± 10.8 |
Distribution of chronological age, n (%) | ||||
≥ 20 and < 30 | 245 (12.3%) | 8 (0.2%) | 0 | 0 |
≥ 30 and < 40 | 231 (11.6%) | 55 (1.6%) | 3 (6.0%) | 4 (3.9%) |
≥ 40 and < 50 | 246 (12.4%) | 224 (6.5%) | 0 | 6 (5.9%) |
≥ 50 and < 60 | 292 (14.7%) | 624 (18.2%) | 15 (30.0%) | 37 (36.3%) |
≥ 60 and < 70 | 507 (25.5%) | 1139 (33.2%) | 12 (24.0%) | 28 (27.5%) |
≥ 70 and < 80 | 334 (16.8%) | 976 (28.4%) | 18 (36.0%) | 23 (22.5%) |
≥ 80 | 134 (6.7%) | 407 (11.9%) | 2 (4.0%) | 4 (3.9%) |
Sex, n (%) | ||||
Male | 732 (36.8%) | 1482 (43.2%) | 20 (40.0%) | 45 (44.1%) |
Female | 1258 (63.2%) | 1951 (56.8%) | 30 (60.0%) | 57 (55.9%) |
Images, n | ||||
Diffuse-light images | 4542 | 5641 | N/A | N/A |
Slit-lamp images | 3713 | 5663 | 157 | 389 |
