https://www.selleckchem.com/pr....oducts/protoporphyri
Cluster 3 was associated to higher baseline pain (RR 3.71 [95% CI 2.14-6.41]), global health (RR 6.60 [95% CI 3.53-12.33]), and the Stanford Health Assessment Questionnaire (RR 4.40 [95% CI 2.46-7.87]), compared with cluster 1 (highest compared with lowest quartiles). An inverse association was seen for baseline swollen joint count (RR 0.51 [95% CI 0.34-0.85]). A subgroup of patients with RA experience high levels of pain, fatigue, and psychosocial distress 3 years after diagnosis. This subgroup already displayed pronounced pa