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Types of Prognostic Factor Studies
| Type of Study | Nature | Goal |
|---|---|---|
| Phase I | Exploratory (hypothesis generating) | Identify potential prognostic factors for further investigation |
| Phase II | Exploratory | Test association between factor and disease outcome |
| Confirmatory | Protocol-driven, large prospective studies with a priori hypotheses to examine the strength, direction, and independence of a prognostic factor, accounting for potential confounders |
Source: Riley et al, 2009.32
