TUDOR study looked at the incidence of PsA by serially following primary care psoriasis pts. At 1 year, 14/511 developed PsA (incidence 2.74 per 100 p-yrs) and at 2 years 7/444 developed PsA (1.58/100 p-yrs). Combined incidence @2 yrs - 2.2 per 100 p-yrs https://t.co/pbHBWt0pXn https://t.co/tHMhQs1cqN