Table 2.

The association of obesity defined by a single metabolic abnormality with readmission

Subgroups	30-day readmission		90-day readmission		180-day readmission
	HR (95% CI)	P value	HR (95% CI)	P value	HR (95% CI)	P value
Non-obesity without metabolic abnormality	1(reference)		1(reference)		1(reference)
Non-obesity with hyperglycemia	1.367(1.147,1.629)	< 0.001	1.295(1.124,1.492)	< 0.001	1.184(1.038,1.351)	0.012
Non-obesity with hyperlipidemia	1.163(1.001,1.353)	0.049	1.108(0.982,1.249)	0.095	1.09(0.978,1.213)	0.119
Non-obesity with hypertension	1.033(0.94,1.135)	0.505	1.062(0.987,1.143)	0.108	1.07(1.002,1.142)	0.042
Non-obesity with multiple metabolic abnormalities	1.167(1.071,1.271)	< 0.001	1.206(1.128,1.289)	< 0.001	1.185(1.116,1.257)	< 0.001
Obesity without metabolic abnormality	1.05(0.86,1.282)	0.632	1.022(0.871,1.198)	0.792	0.998(0.864,1.154)	0.983
Obesity with hyperglycemia	1.341(0.932,1.927)	0.114	1.221(0.905,1.647)	0.192	1.185(0.902,1.557)	0.222
Obesity with hyperlipidemia	0.937(0.602,1.458)	0.774	0.875(0.613,1.248)	0.46	0.962(0.712,1.301)	0.803
Obesity with hypertension	1.243(1.03,1.501)	0.023	1.168(1.003,1.36)	0.046	1.235(1.081,1.411)	0.002
Obesity with multiple metabolic abnormalities	1.274(1.121,1.447)	< 0.001	1.285(1.163,1.42)	< 0.001	1.275(1.166,1.395)	< 0.001

COX analysis was conducted to assess the association of obesity defined by a single metabolic abnormality with readmission, adjusted for age, sex, discharge disposition, discharge month, local hospital admission, household income, emergency department service, insurance type, and location of residence