Table 2

Characteristics of readmission versus non-readmission episodes

VariableGroupingTotal episodes (%)Readmitted (%)Not readmitted (%)Comparison*
Patient ageMedian, range (IQR)55.0, 18–106 (37–72)64.0, 18–105 (44–78)55.0, 18–106 (37–71)p<0.0001
GenderMale39 001 (42.4)3545 (9.1)35 456 (90.9)X2=175.1; p<0.0001
Female52 921 (57.6)3562 (6.7)49 359 (93.3)
Index length of stay (days)Median, range (IQR)0.0, 0–301 (0.0–2.0)1.0, 0–223 (0.0–5.0)0.0, 0–301 (0.0–1.0)p<0.0001
Admission typeEmergency46 922 (51.0)6005 (12.8)40 917 (87.2)X2=3573.4; p<0.0001
Elective7243 (7.9)410 (5.7)6833 (94.3)
Day case37 757 (41.1)692 (1.8)37 065 (98.2)
Comorbidityscore†074 274 (80.8)5083 (6.8)69 191 (93.2)X2=1126.9; p<0.0001
114 984 (16.3)1820 (12.1)13 164 (87.9)
22147 (2.3)29 (1.4)2118 (98.6)
3514 (0.6)172 (33.5)342 (66.5)
43 (0.0)3 (100.0)0 (0.0)
60 (0.00 (0.0)0 (0.0)
Accident and emergency visits in the previous 6 monthsMedian, range (IQR)1.0, 1–121 (1.0–2.0)2.0, 1–107 (1.0–4.0)1.0, 1–121 (1.0–2.0)p<0.0001
  • *Continuous variables were compared using the Mann-Whitney U test and categorical variables were compared using the X2 test.

  • †Comorbidity score does not relate to the number of comorbidities; scores are assigned based on severity of comorbidities.