%0 Journal Article %A R Froud %A S Eldridge %A M Underwood %T OUTCOME MEASURES AND POWER IN NON-SPECIFIC LOW BACK PAIN TRIALS %D 2009 %J Orthopaedic Proceedings %P 284-284 %V 91-B %N SUPP_II %R 10.1302/0301-620X.91BSUPP_II.0910284a %U https://doi.org/10.1302/0301-620X.91BSUPP_II.0910284a %K