In the multivariable analysis of predictors of a ≥ 20% improvement in ASDAS-CRP, the following variables were included: receiving nutritional advice (group N), ≥ 20% improvement in PREDIMED score, age, psoriasis, use of steroids, concomitant treatments, disease duration, and patient VAS global and patient VAS pain. Here, CRP is linked to psoriasis.