Figure 2.

Plots of the two major component loadings from PLS on the whole Leiden Early Arthritis Clinic (n = 704). Each dot indicates one patient. Component scores indicate how strongly each component is represented in each patient. Patients positive for anti-CCP antibodies are blue, whereas negative patients are red. CCP, citrullinated peptide antibody; PLS, partial least squares regression.

De Rooy et al. Arthritis Research & Therapy 2011 13:R180   doi:10.1186/ar3505
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