Big Data Danger

This post comes mainly courtesy (again) of the astute Steve Hawkins, who responded to my concerns in the Getting Airborne post about the possible dangers of a MEGA Biobank. Over to Steve:

On the ‘big data’ front, I think that all genuine physical measurements will be useful if used in the right way. The danger comes from any extraction/filtering that uses diagnosis as the reference field. If they do that – and I’m sure Crawley and Co would, because they think they can diagnose without biomarkers – the results would be garbage, as there would be many conditions given the wrong name but appearing together.

On the other hand, filtering on key concrete signs like PEM, POTS, bedbound, etc. would pull up useful groupings whatever the ostensible diagnosis.

In the wider scheme of things, there are now a number of entrepreneuring projects aiming to collect ALL big medical data, and link all medical databases together. I read a good piece on this recently by one bioinformatician who is setting up a giant server, but I don’t seem to have bookmarked it. Here is a conference on getting all genomic information into ‘the cloud’ for free searching and filtering: And one from The Lancet, on the astronomical amount of data that is about to flow from mobile phones whose apps have turned into our version of Star Trek’s ‘tricorder’. All this info will go into ‘the cloud’:

So we’re getting to the stage where all data is useful: so long as it is faithfully produced. Sadly, we know from PACE that data will have to be graded by association with researcher, and those who cannot be trusted will have their data discarded. There is nothing they can do about this: if their name is on their shoddy work, it will go nowhere, and all the data they collected will be wasted.

There lies the danger of MEGA: not that it will pollute the big data, but that any good data it contains will be at risk of being discarded by everyone but Crawley and her associates. That is why patients should NOT let their data be associated with MEGA while Crawley is involved.

I think Steve has nailed it there, and as it seems unlikely that Prof Crawley will be willing to part company with MEGA, I still believe that we should sign the OMEGA (Opposing MEGA) petition to demonstrate our strength of feeling against the proposal as it stands. The original pro-MEGA petition has now been closed – perhaps because they realised that more people were taking their signatures off than were putting them on – but the OMEGA team are still promoting their counter petition. Here is their latest blog. Scroll to the end for the link to their petition or just click here.

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