Defining proficiency in THD-Anolift: a CUSUM analysis of the learning curve in 51 consecutive cases.

Int J Colorectal Dis · 2026 · PMC13364931 · PMID 42159773

Europe PMC DOI

hedged sentences

0.0010

closest p · 0.0× alpha

0.5560

boldest claim

The sentences

highly significantp < 0.001actually significant

The operative time reduction, by contrast, was highly significant ( p < 0.001) and provides unambiguous evidence of a learning effect.

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a decreasing trendp = 0.556not close (p > 0.1)

Third, tertile analysis showed a significant stepwise decrease in operative time across experience (27.8, 22.4, 20.2 min; Kruskal–Wallis p = 0.011) and a decreasing trend in composite failure (47.1%, 35.3%, 29.4%; chi-square p = 0.556; Table 2 ).

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a favorable trendno p-value reported

Conclusions CUSUM analysis identified an inflection at approximately 23 consecutive THD-Anolift cases, supported by parallel improvement in operative efficiency and a favorable trend in clinical outcomes that was robust to sensitivity testing.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.