Frequency of hospital readmission and care fragmentation in gastroparesis: A nationwide analysis

Table 4 Association of admission to a non-index hospital during the first readmission (care fragmentation) with in-hospital costs, length of stay, mortality, and 60-d readmission

	30-d first readmission
	Readmission to index hospital	Readmission to non-index hospital	Comparison	P
Total cost for first readmission, mean/median (IQR)	$12311/$7508	$15645/$8598	Difference in cost: 3803$ (2777-4829)1	< 0.0001
	($4659-$13204)	($5281-$15472)
Length of stay in days, mean (SD)	5.8 (6.5)	6.5 (8.2)	Adjusted HR (95%CI): 1.07 (1.01-1.13)2	0.03
In-hospital Mortality	1.30%	1.00%	Adjusted OR (95%CI):	0.84
			0.95 (0.57-1.57)3
60-d readmission	54.60%	55.30%	Adjusted HR (95%CI): 0.99 (0.94-1.06)4	0.99

¹Results from multivariable linear regression including age, sex, and Elixhauser mortality score;

²Results from multivariable proportional hazards model including age, sex, Elixhauser readmission index. The risk predicted in the length of stay analysis is for later discharge from the hospital, HR > 1 indicates increased risk of later discharge;

³Results from multivariable logistic regression model including age, sex, Elixhauser mortality score;

⁴Results from multivariable proportional hazards model including age, sex, Elixhauser readmission index, and discharge disposition. HR: Hazard ratio; CI: Confidence interval; OR: Odds ratio.