Levels of evidence supporting American, European and international guidelines in psychiatry, 2014-2024: a systematic review with quantitative synthesis.

BMJ Ment Health · 2026 · PMC12983855 · PMID 41806975

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hedged sentence

0.0700

closest p · 1.4× alpha

0.0700

boldest claim

The sentences

a significant trendp=0.07so close (0.05 < p ≤ 0.1)

The proportion of recommendations based on high or moderate level evidence did not show a significant trend during the study period (p=0.07) ( online supplemental figure S2 ).

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