When treatments don't seem to work for a diagnosis we will often try to see if they work for particular subgroups. Sure, that's a thing, but that is a very difficult thing to determine that demands a very specific process. How have we done with subgroup analysis regarding low back pain? Have JW and Erik found the Ultimate Prime Number?!

A systematic review reveals that the credibility of subgroup claims in low back pain trials was low. Saragiotto BT, Maher CG, Moseley AM, Yamato TP, Koes BW, Sun X, Hancock MJ. J Clin Epidemiol. 2016 Jun 10. pii: S0895-4356(16)30174-3. doi: 10.1016/j.jclinepi.2016.06.003. [Epub ahead of print]

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Music for PT Inquest: "The Science of Selling Yourself Short" by Less Than Jake Used by Permission