Evaluating beneficial drug effects in a non-interventional setting: a review of effectiveness studies based on Swedish Prescribed Drug Register data.

Br J Clin Pharmacol · 2017 · PMC5427236 · PMID 27928842

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a positive trendno p-value reported

Encouragingly, protocols for effectiveness studies seem to emerge in the scientific literature 39 , illustrating a positive trend in this area.

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