“…Due to inconsistent results, the association between home discharge and gender [ 9 , 22 , 23 , 27 – 29 , 33 ], comorbidity [ 9 , 10 , 29 , 31 ], type of surgery [ 10 , 25 , 26 , 34 ], living alone [ 28 , 30 ] and postoperative complications [ 10 , 31 ] was less obvious. These opposing outcomes might have been caused by differences in study populations (traumatic brain injury [ 9 ], hip replacement [ 10 , 29 , 30 , 33 ], knee replacement [ 25 , 28 ], spinal cord injury [ 23 ] and lower extremity amputation [ 31 ]) or a difference in the size of the study population [ 36 ].…”