Table 1 of Gong, Mol Vis 2008; 14:2381-2389. Table 1 of Gong, Mol Vis 2008; 14:2381-2389.
Table 1. Demographic features of the study populations.
| Hong Kong cohort (southern Chinese) | Beijing cohort (northern Chinese) | |||
|---|---|---|---|---|
| Cases (n=293) | Controls (n=250) | Cases (n=169) | Controls (n=197) | |
| Female (%) | 117 (39.9) | 127 (50.8) | 37 (21.9) | 100 (50.8) |
| Age range | 15–88 | 60–99 | 8–82 | 60–89 |
| Mean age (SD) years | 66.8 (12.9) | 74.1 (6.8) | 39.1 (16.5) | 69.4 (6.0) |