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Table 1 The demographic, clinical characteristics of hospitalized patients with different risks of readmission

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

  LACE < 10, n=107495 LACE ≥ 10, n=20055 p  
Age, mean year (SD) 52.82 (17.64) 66.46 (14.68) <0.001 <0.001
Age group, %     
  <65 years 72.30 42.08 <0.001 <0.001
  ≥65 years 27.70 57.92
Male sex, % 52.52 48.30 <0.001 <0.001
Ethnicity, %     
  Chinese 71.20 73.93 <0.001 Reference
  Malay 11.61 13.06 0.001
  Indian 10.01 9.09 <0.001
  Others 7.18 3.91 <0.001
Admission ward class, %     
  A 12.49 6.13 <0.001 Reference
  B 62.49 56.81 <0.001
  C 25.02 37.05 <0.001
Year of discharge, %     
  2006 28.00 35.63 <0.001 Reference
  2007 22.02 22.26 <0.001
  2008 17.40 15.93 <0.001
  2009 16.54 13.46 <0.001
  2010 16.14 12.73 <0.001
ICU admission, % 0.57 2.35 <0.001 <0.001
Charlson comorbidity index (SD) 0.35 (0.62) 1.64 (0.90) <0.001 <0.001
No of ED visits in 6 months before the index hospitalization* 1.10 (1.10, 1.10) 1.20 (1.20, 1.21) <0.001 <0.001
Length of stay for index hospitalisation, day* 1.91 (1.90, 1.92) 6.21(6.14, 6.29) <0.001 <0.001
  1. SD, standard deviation. ED, Emergency Department. *Geometric mean (95% confidence interval).
  2. p value was calculated using Chi-Square test except p value for age was calculated using two sample t-test and length of stay using Mann–Whitney U test.