Assertion: macular degeneration's treatment | /r/HasProperty | given in phase 3 studies
Facets:
value: to confirm its effectiveness
type: PURPOSE
Source sentences:
text: In Phase 3 studies, the study drug or treatment is given to even larger groups of people (1,000-3,000) to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.