| Age range | PXG frequency (%) | POAG |
| 40 - 49 | 5 (20) | 19 (18.3) |
| 50 - 59 | 8 (32) | 28 (26.8) |
| 60 - 69 | 5 (20) | 24 (23.0) |
| 70 - 79 | 5 (20) | 22 (21.2) |
| 80 - 89 | 2 (8) | 11 (10.7) |
| Total | 25 (100) | 104 (100) |