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Study Type – Prognosis (case series)Level of Evidence 4What's known on the subject? and What does the study add?Previous studies have reported better outcomes in cancer patients that enrolled in clinical trials, suggesting that trial participation in itself might be beneficial.We investigated the potential positive effect of clinical trial participation on survival outcomes of patients with metastatic...
We explored the hypotheses that an investigator's belief in a putative neuroprotective agent might influence the timing of symptomatic intervention and the assessment of signs and symptoms of patients with Parkinson's disease with the Unified Parkinson's Disease Rating Scale (UPDRS). These hypotheses were tested with Cox and general linear modeling, using data from a previously published double‐blind...
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