CRP and rheumatoid arthritis: However, TCPH [β-coefficient 0.01 (95% CI 0.00, 0.01), Padj = 0.28] was not correlated with pretreatment CRP levels, and further research will be required to determine whether the association of TCPH with clinical outcome measures is specific to etanercept response in RA or is a general theragnostic indicator.