The independent risk factors for early readmission identified according to regression analysis were living alone ( odds ratio ( OR ) = 1.71 , 95 % confidence interval ( CI ) = 1.02-2 .87 ) , fair or poor satisfaction with primary care physician ( OR = 2.12 , 95 % CI = 1.01-4 .46 ) , not having Medicaid ( OR = 1.80 , 95 % CI = 1.05-3 .11 ) , receiving a new assistive device in the past 6 months ( OR = 2.26 , 95 % CI = 1.26-4 .05 ) , and staying in a nursing home in the past 6 months ( OR = 5.08 , 95 % CI = 1.56-16 .53 ) .