Barely Significant
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Comparative Effects of Red and Blue LED Light on Melatonin Levels During Three-Hour Exposure in Healthy Adults.

Life (Basel) · 2025 · PMC12113466 · PMID 40430143

Europe PMCDOI
2
hedged sentences
0.0680
closest p · 1.4× alpha
0.0680
boldest claim

The sentences

approached significancep = 0.068so close (0.05 < p ≤ 0.1)
No statistically significant differences were found between the lighting conditions at any time point, although at 2 h of exposure, the difference between blue and red light approached significance ( p = 0.068), with higher melatonin concentrations observed under red light.

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did not reach statistical significanceno p-value reported
Although decreases were also noted in the group of women ( p = 0.237) and the group of men ( p = 0.138), these did not reach statistical significance.

also in 111,027 other papers

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