Do that to me one more time! What kind of trial replications do we need?
Lüdtke R (2008) · Complementary Therapies in Medicine · n=0
Perfil del estudio
- Diseño
- invited editorial on the methodological need for and design of replication trials in leech therapy and complementary medicine generally (Karl and Veronica Carstens Foundation, Germany)
- Tamaño de la muestra (n)
- —
- Intervención
- Editorial discussion of replication-trial design - direct replication versus methodologically improved replication, sham control issues, meta-analytic considerations
- Comparador
- Editorial framework - not an empirical comparison
- Punto final primario
- Methodological recommendations for future leech therapy replication trials
- Resultado primario
- Recommends replication trials that are methodologically improved over the original Michalsen 2003 design - in particular adding sham control where ethically feasible - rather than purely direct replication; flags Andereya 2008 Acta Orthopaedica's artificial-leech control as an example of progress
- Duración del seguimiento
- not applicable (editorial)
- PMID
- 18638707
Hallazgos clave
- Editorial by Karl and Veronica Carstens Foundation methodologist Rainer Lüdtke, co-author of the Michalsen 2003 landmark RCT
- Argues for methodologically improved replication trials (especially adding sham control) over direct replication
- Specifically discusses leech therapy in the context of broader complementary-medicine trial replication
- Influenced the design of subsequent sham-controlled trials including Hohmann 2014 and the ongoing ELECT 2025 trial
- Provides methodological framing for understanding why the field has progressively shifted from open-label to sham-controlled designs
Limitaciones
- Editorial only - not primary evidence
- No empirical data
- Reflects 2008 methodological state-of-the-art - subsequent literature has advanced
- Single-author opinion piece
- No GRADE rating
Implicaciones clínicas
Lüdtke 2008 is an important methodological reference for understanding the trajectory of the leech-therapy RCT literature. It documents the moment when the field recognized that further open-label replication was less valuable than sham-controlled and methodologically-improved designs. For ASH editorial-board purposes, this editorial provides historical context for the moderate GRADE rating applied to the knee OA evidence base: the field acknowledges that current evidence is moderate-quality precisely because the foundational Michalsen 2003 trial was open-label, and the subsequent improvement trajectory (Andereya 2008 artificial leech, Hohmann 2014 sham, ELECT 2025 multicenter sham) has not yet fully closed the gap.
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Andereya S, Stanzel S, Maus U, Mueller-Rath R, Mumme T, Miltner O (2006)
Comparison of modern leech therapy with intra-articular hyaluronic acid injections for symptomatic relief of knee osteoarthritis
Andereya S, Stanzel S, Maus U, Mueller-Rath R, Mumme T, Miltner O, Andereya S (2008)
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Lauche R, Cramer H, Langhorst J, Dobos G (2014)