Not vice versa [Power / Sample Size]

posted by mittyri  – Russia, 2025-02-22 22:08 (64 d 03:57 ago) – Posting: # 24372
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Dear zizou,

❝ Yes, it is always true. A significant treatment effect at 10% significance level (i.e. p < 0.1) will show up in all studies where the confidence interval does not include unity.


you are correct
However, the reverse implication isn’t airtight. When a confidence interval does include unity, it does not automatically mean that the p‑value will exceed 0.1.

Kind regards,
Mittyri

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