Hospital accreditation, reimbursement and case mix: links and insights for contractual systems

Table 4 Descriptive statistics for 30-day readmissions as proportion of total admissions, independent t-test on ownership, and one-way between-group analysis of variance (ANOVA) across hospital sizes and accreditation

		30-day readmission to same hospital				30-day readmission to any hospital
		Mean	Std. deviation	P value	Sig*	Mean	Std. deviation	P value	Sig*
Accreditation
	A	0.027	0.041	0.014*		0.040	0.045	0.001*	D
	B	0.023	0.019			0.025	0.016
	C	0.015	0.015		D	0.020	0.013		D
	D	0.007	0.006		C	0.013	0.009		A, C
Size
	Small (<50 beds)	0.009	0.010	0.013*	Large	0.014	0.009	<0.001*	Large
	Medium (50–100 beds)	0.016	0.022			0.020	0.019		Large
	Large (>100 beds)	0.027	0.035		Small	0.040	0.040		Small, Medium
Ownership
	Public	0.013	0.011	0.111		0.020	0.011	0.066
	Private	0.018	0.027			0.025	0.030
All		0.017	0.025			0.024	0.027

*Significance determined with Tamhane’s T² post-hoc comparison; borderline significance between A and D categories for 30-day readmission to same hospital.

ISSN: 1472-6963