Someone thinks differently:
No Widespread Criticism of Underpowering
Publications (e.g., Journal of Prevention of Alzheimer’s Disease, 2025) and presentations (CTAD 2025) emphasize positive outcomes without noting power as fatal.
EMA's negative opinion (trend vote) cited endpoint inconsistencies and design concerns, but not explicitly sample size/underpowering as primary issue. Re-examination is ongoing.
In summary, the SD=4.5 was optimistic but defensible for early AD and advanced methods. The trial's significant findings on cognition, secondary/global measures, and biomarkers indicate sufficient power for key effects—far from "invalidating" results. Larger confirmatory studies would strengthen evidence, but this does not represent a critical methodological flaw undermining validity.