Table 1.
Demographic and Clinical Characteristic of the Study Subjects
| Characteristics | Overall | Chinese | Indian | Malay | P Value* |
|---|---|---|---|---|---|
| Number of subjects | 3843 | 1303 | 1433 | 1107 | |
| Number of Eyes | 7020 | 2235 | 2729 | 2056 | |
| Age, yr | 59.4 (8.9) | 55.0 (7.3) | 61.5 (8.4) | 61.8 (9.2) | <0.001 |
| Gender, female | 1928 (50.2) | 644 (49.4) | 711 (49.6) | 573 (51.8) | 0.452 |
| Intraocular pressure, mm Hg | 14.8 (3.0) | 14.3 (3.0) | 15.3 (2.8) | 14.5 (3.0) | <0.001 |
| Vertical cup-to-disc ratio | 0.5 (0.1) | 0.5 (0.1) | 0.6 (0.1) | 0.5 (0.1) | < 0.001 |
| Disc area, mm2 | 2.0 (0.4) | 2.0 (0.4) | 2.0 (0.4) | 2.1 (0.4) | < 0.001 |
| RNFL thickness, µm | |||||
| Global | 92.3 (11.2) | 96.5 (9.6) | 87.1 (10.6) | 94.6 (10.8) | < 0.001 |
| Temporal sector | 65.5 (12.8) | 71.7 (12.2) | 58.8 (10.9) | 67.8 (11.4) | < 0.001 |
| Superior sector | 115.4 (17.7) | 121.3 (16.6) | 108.6 (16.4) | 118.0 (17.5) | < 0.001 |
| Nasal sector | 69.3 (11.0) | 68.1 (10.7) | 69.2 (11.0) | 70.8 (11.0) | < 0.001 |
| Inferior sector | 118.8 (18.4) | 124.6 (16.8) | 111.9 (17.2) | 121.8 (18.6) | < 0.001 |
Data are presented as mean (standard deviation) or number (%), as appropriate by eye.