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Table 3 Multivariate regression analysis assessing associations of factors with 30-days unplanned readmission after index discharge, n=127550

From: Applicability of a previously validated readmission predictive index in medical patients in Singapore: a retrospective study

  OR 95% CI p-value
Age group, years     
  <65 Reference    
  >= 65 1.73 1.63 1.83 <0.001
Female sex 0.85 0.81 0.89 <0.001
Ethnicity     
  Chinese Reference    
  Malay 0.92 0.86 0.99 0.018
  India 1.0 0.93 1.08 0.965
  Others 0.77 0.69 0.87 <0.001
Year of discharge     
  2006 Reference    
  2007 0.81 0.76 0.86 <0.001
  2008 0.75 0.70 0.80 <0.001
  2009 0.74 0.69 0.80 <0.001
  2010 0.79 0.74 0.84 <0.001
ICU admission 1.14 0.94 1.39 0.176
Admission class     
  A Reference    
  B 1.83 1.66 2.01 <0.001
  C 1.99 1.80 2.20 <0.001
LACE Group 4.88 4.56 5.21 <0.001
  1. Logistic regression was used for analysis. OR, odds ratio; CI, confidence interval. Hosmer and Lemeshow test for 30-days unplanned readmission, x2 = 12.7, df = 8, P = 0.122. C-statistic 0.70; P < 0.001.