Study in Ankylosing Spondylitis (AS) and Psoriatic Arthritis (PsA) Patients to Evaluate Work Productivity Before and After the Start of Adalimumab Therapy in Daily Practice in Belgium

This observational study will document to what extent in daily clinical practice the work productivity is affected before and after the start of adalimumab treatment. Changes in the employment status and work productivity of participants with AS and PsA before and after the start of adalimumab will be noted. The relationship between employment status, work productivity, disease activity and clinical evaluations will be evaluated. Since AS and PsA might be diseases with a strong impact on the daily life of the participant, an evaluation will be performed to the effect of the disease on quality of life and work productivity.