The Ghost Research Haunting Nordic Medical Trials

Campaigners for greater transparency in medical science have reiterated calls for more to be done to avoid "medical research waste" after an investigation found that results from more than a fifth of clinical trials across five Nordic countries have never been made public.

A study found that results from 475 clinical trials in Denmark, Iceland, Finland, Norway, and Sweden — involving almost 84,000 participants — were never made public in any form.

Nonpublication of clinical trial results wastes public money, harms patients, and undermines public health, the researchers said.