Assessment of 30 Years of Randomized Controlled Trials in <i>The American Journal of Sports Medicine:</i> 1990-2020.

Orthop J Sports Med · 2023 · PMC10192813 · PMID 37213657

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0.1500

closest p · 3.0× alpha

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The sentences

showed a trendP = .15not close (p > 0.1)

Regression analysis showed a trend to decreased sample sizes from 1990 to 2020 (β = –3.8 [95% CI, 1.4 to –9.0]; P = .15).

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a nonsignificant trendno p-value reported

12 , 13 , 21 – 23 Within the time frame we examined, small sample sizes (<50 patients; n = 75 studies) and a high proportion of single-center trials (86.3%) were observed, and there was a nonsignificant trend toward smaller mean sample sizes over time (see Table 2 ).

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an increasing trendno p-value reported

The 277 RCTs published in AJSM between 1990 and 2020 demonstrated an increasing trend in the number of trials published over time ( Figure 1 ).

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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.