Journal of clinical epidemiology
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Review Meta Analysis
The account for provider and center effects in multicenter interventional and surgical randomized controlled trials is in need of improvement: a review.
To systematically review the account of center and provider effects in large surgical and interventional randomized controlled trials. ⋯ Only few trials account for center or provider effect in the design and analysis. Authors and journal editors could play an important role in improving the reporting of trials.
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The aim was to evaluate papers retracted due to falsification in high-impact journals. ⋯ Retractions due to falsification can take a long time, especially when senior researchers are implicated. Fraudulent articles are not obviously distinguishable from nonfraudulent ones.
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To assess the psychometric properties of the short-form chronic respiratory disease questionnaire (SF-CRQ) as a quality-of-life (QOL) instrument in chronic obstructive pulmonary disease (COPD) exacerbations. ⋯ SF-CRQ is a valid, reliable, and responsive instrument for the assessment of short-term QOL change in patients with COPD exacerbations.