Most Published Research Findings Are False—But a Little Replication Goes a Long Way
Figure 2
Positive Predictive Value for Research Findings Being True for At Least r Positive Studies Out of Ten, 25, and 50 Studies for Pre-Study Odds R of 0.0001, 0.01, 0.1, and 0.5 (α = 0.05)
Dashed lines refer to power of 0.2 and solid lines to power of 0.8.