Many RCTs have demonstrated efficacy and safety of biologics in PsA. However, long term comparative real world data is lacking. This study aimed to evaluate the real-world effectiveness and persistence of the IL-12/23 inhibitor ustekinumab or a TNFi for PsA 1 year post initiation. As a result, they found that PS-adjusted comparisons demonstrated comparable overall persistence, effectiveness and safety for both modes of action in PsA.