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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

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

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