“…Three studies related to the derivation and construct validation of a stabilization CPR 15,20,31 . Other CPR derivation studies sought to identify criteria for determining which patients would improve: with physiotherapy or chiropractor 30 , with chiropractor 25,28 , with usual care or minimal intervention 27 , with zygapophyseal joint injections 29 , which patients with sciatica would improve with traction 26 , and which chronic back pain patients would improve with multidisciplinary rehabilitation 32 . Brennan et al 15 conducted a trial in which patients were randomized to manipulation, stabilization exercises, or directional preference exercises, but their main intent was to investigate outcomes according to whether patients received their matched sub-grouping based on initial clinical presentation.…”