Tailored, Therapist-Guided Internet-Based Cognitive Behavioral Therapy Compared to Care as Usual for Patients With Rheumatoid Arthritis: Economic Evaluation of a Randomized Controlled Trial

Maaike Ferwerda   ^{1, 2} , PhD ;   Sylvia van Beugen   ^{1, 2} , PhD ;   Henriët van Middendorp   ^{1, 2} , PhD ;   Henk Visser   ³ , MD, PhD ;   Harald Vonkeman   ^{4, 5} , MD, PhD ;   Marjonne Creemers   ⁶ , MD, PhD ;   Piet van Riel   ⁷ , MD, PhD ;   Wietske Kievit   ⁸ , PhD ;   Andrea Evers   ^{1, 2} , PhD

¹ Health, Medical and Neuropsychology Department, Institute of Psychology, Leiden University, Leiden, Netherlands, The

² Medical Psychology Department, Radboud University Medical Center, Nijmegen, Netherlands, The

³ Department of Rheumatology, Rijnstate Hospital, Arnhem, Netherlands, The

⁴ Centre for eHealth and Well-Being Research, University of Twente, Enschede, Netherlands, The

⁵ Arthritis Center Twente, Department of Rheumatology and Clinical Immunology, Medisch Spectrum Twente, Enschede, Netherlands, The

⁶ Department of Rheumatology, Jeroen Bosch Hospital, Den Bosch, Netherlands, The

⁷ Scientific Institute for Quality of Healthcare, Radboud University Medical Center, Nijmegen, Netherlands, The

⁸ Department for Health Evidence, Radboud University Medical Center, Nijmegen, Netherlands, The