Agnes Vitry

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The effectiveness of a drug may be evaluated based on its potential to shrink tumours – but this doesn’t necessarily equate to improved survival rates. From shutterstock.com

Do new cancer drugs work? Too often we don’t really know (and neither does your doctor)

Barbara Mintzes, University of Sydney and Agnes Vitry, University of South Australia

National drug regulators use evidence from clinical trials to decide whether new cancer drugs will be approved for use. But these studies are often flawed.
Post-marketing studies are often used as ploys to get doctors in the habit of prescribing expensive new medicines. Flickr / Nestle

How Big Pharma opens the market to new expensive drugs

Agnes Vitry, University of South Australia

New medicines are often marketed on the basis of clinical trials of limited size and duration. So clinical studies of a medicine after it has reached the market (post-marketing studies) can be a useful…

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