Table 4.
Kaplan-Meier Estimates of Cumulative Probability of an Event
| Time | Estimate (95% Confidence Interval) |
|
|---|---|---|
| Central GA Development |
Bilateral GA Development |
|
| At initial GA developmenta | 0.35 (0.31-0.38) | 0.07 (0.05-0.09) |
| Year 2 | 0.50 (0.46-0.54) | 0.24 (0.21-0.28) |
| Year 4 | 0.66 (0.61-0.70) | 0.37 (0.32-.042) |
| Year 6 | 0.77 (0.72-0.82) | 0.47 (0.42-0.53) |
| Year 8 | 0.88 (0.82-0.94) | 0.54 (0.47-0.60) |
| Year 10 | 0.96 (0.89-1.00) | 0.62 (0.52-0.72) |
| Median time to event, y | 2.5 (2.0-3.0) | 7 (6.0-10.0) |
Abbreviation: GA, geographic atrophy.
a
Central GA or bilateral GA occurring at the same time that any GA was first identified.