Continues discourse about “level V evidence”

In my recent post I discussed about “Level V Guideline” for subacromial decompression. I naturally participated to the discussion Drs Poolman and van den Bekerom had started. We wrote in our letter: ‘Optimal patient selection’ can be considered a myth until evidence of effect modifiers arises. We argue that if there were subpopulations that benefit […]

Crusade against low value care continues

Hohmann et al. published a truly exceptional “Level V Guideline” in the Arthroscopy Journal. They conclude: However, when indicated, SAD has stood the test of time and long-term studies have clearly demonstrated good and excellent outcomes. So, two recent high-quality sham-controlled studies clearly demonstrate that arthroscopic subacromial decompression offers no relevant benefit over sham-surgery. Apparently […]

Three-to-one response to our letter

In my previous blog post I told about our letter to editor concerning a study criticizing sham-controlled studies in orthopaedics. Another letter was also submitted and accepted at the same time by Harris, Poolman and Buchbinder. They had also very important aspects regarding the criticism towards sham-controlled RCTs: We agree that there are other methods […]

Our response to Sochacki et al. regarding sham-controlled RCTs

Sochacki et al. wrote in their study: Randomized sham-controlled studies in orthopaedic sports medicine have significant methodologic deficiencies that may invalidate their conclusions. High quality sham-controlled RCTs in the field of sports and arthroscopic surgery have met severe objection from people who are advocates of these common procedures. A study after another study show that […]

Do we have bigger problems than possible lowering the threshold of statistical significance

Evans et al. published following study in the Arthroscopy Journal “The Potential Effect of Lowering the Threshold of Statistical Significance From P < .05 to P < .005 in Orthopaedic Sports Medicine”. This caught my attention since these authors published similar article in another journal in 2019 titled “Effects of a proposal to alter the statistical significance threshold on […]

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