Valkee’s vanishing patients

From September 2010, the english pages of valkee.com, as well as a number of reseller sites, fanfared revolutionary results. 9 of 10 patients were cured from severe depression with a 4-week earlight treatment. 25 individuals participated in the trial.valkeecom-25092010-25patients

In 2012, things have changed: It’s still 9 of 10, but the trial had 13 patients. What happened to the rest – that’s more than a scholarly question. If you can modify this number just like that, then the result is not reliable.

The thesis of A. Abou-Elseoud, about a set of fMRI trials, says:

elseoud-thesis-twopatientwaves

A number of patients was recruited into the pilot study in winter 2008/2009. This is obviously the same trial which was later published in Medical Hypotheses. The dates fit exactly, also the descriptions of the screening procedures and the entry criteria.

Abou-Elseoud tells more in an article about the fMRI findings, out of the thesis.

elseoud-humanbrainmapping-2014

There are slight, but clear differences between the wave I (pilot study) patients and the details in Valkee’s publication. Age, HAMD score, number of depressive episodes, all different. But it is the same patient set, with other characteristics identical.

timonen-medhyp-2012

The same study has variable numerical values, and most important, a volatile number of participants.

The claim that earlight somehow cured 9 of 10 patients in a trial is absolutely not credible, because even this low-class evidence for Valkee’s effects seems to be fabricated.

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