“…In total 9 studies described the relationship between fatigue and mortality (Avlund et al, 1998, Avlund et al, 2003a, Basu et al, 2016, Cole et al, 1999, Hardy and Studenski, 2008, Moreh et al, 2009, Moreh et al, 2010, Prescott et al, 2003, Schultz-Larsen and Avlund, 2007b, 9 articles discussed different diseases (Bergelt et al, 2005, Ekmann et al, 2013, Iversen et al, 2012, Just-Ostergaard et al, 2018, Kornerup et al, 2010, Pedersen et al, 2016, Prescott et al, 2003, Volden et al, 2017, Williams et al, 2010) (of which 3 discussed heart disease), 8 articles looked at physical functioning expressed in physical J o u r n a l P r e -p r o o f activity (Moreh et al, 2010), physical capacity and gait (Simonsick et al, 2016, Simonsick et al, 2018 while others expressed physical functioning on the Mobility Help scale (Avlund et al, 1995, Idland et al, 2013, Avlund et al, 2003b, Avlund et al, 2003a, Schultz-Larsen and Avlund, 2007b. Four articles described the prospective value of fatigue on disability in Activities of Daily Living (ADL's) (Avlund et al, 1995, Avlund et al, 2002b, Moreh et al, 2010, Mueller-Schotte et al, 2016, 3 investigated hospitalization (Avlund et al, 2001a, Rod et al, 2011, Zaslavsky et al, 2014, and the remaining single articles investigated falls (Kamitani et al, 2017), healthcare utilization (Avlund et al, 2001a), self-reported health…”