Assessments
Fingernail psoriasis, Psoriasis, psoriasis
DISEASE, PSORIASIS, PSORIASIS
Fingernail psoriasis was assessed using the Nail Psoriasis Severity Index (NAPSI). The nail most affected by psoriasis (target nail) was divided into quadrants and graded on a scale of 0–4 for both psoriasis of the nail matrix and nail bed; hence, the NAPSI total ranges from 0 to 8, with a higher score indicating more severe disease (Suppl. Table SNAPSI, f-PGA, PASI, and DLQI were reported at week 0, week 16, week 24, and week 48 (as observed data); any differences between subgroups were nominal. Figures were generated for NAPSI, PASI, and DLQI through time, based on locally estimated scatterplot smoothing of data from the available time points.