Additional file 1 of Real-world evidence of biologic treatments in psoriatic arthritis in Italy: results of the CHRONOS (EffeCtiveness of biologic treatments for psoriatic artHRitis in Italy: an ObservatioNal lOngitudinal Study of real-life clinical practice) observational longitudinal study

Additional file 1: Socio-demographic and clinical characteristics at enrollment/start of biologic treatment under analysis (in Secukinumab and TNFis patients). In this file main socio-demographic and clinical characteristics at enrollment/start of biologic treatment under analysis are described in the groups of patients treated with Secukinumab and with TNFis.