1. Maria Haak, PhD, OT (reg), is Research Assistant, Division of Occupational Therapy and Gerontology, Lund University, PO Box 157, SE-221 00 Lund, Sweden; maria.haak@med.lu.se
2. Agneta Fänge, PhD, OT (reg), is Senior Lecturer, Division of Occupational Therapy and Gerontology, Lund University, Sweden
3. Vibeke Horstmann, LicSc, is Statistician, Division of Occupational Therapy and Gerontology, Lund University, Sweden
4. Susanne Iwarsson, PhD, OT (reg), is Professor, Division of Occupational Therapy and Gerontology, Lund University, Sweden