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Table 2 The twenty most significant variables predicting the risk for unplanned admission to hospital

From: Clinically useful prediction of hospital admissions in an older population

 Number% unplanned hospital admissionCrude OR95% CI
Total 20,36420.3
Categorical Variables
 Diagnoses in hospital care
  E11 Type 2 diabetes mellitusNo19,71819.51 (ref)
Yes64643.33.15(2.69–3.70)
  I10 Essential hypertensionNo18,17418.31 (ref)
Yes219036.52.57(2.33–2.82)
  I25 Chronic ischaemic heart diseaseNo19,66319.51 (ref)
Yes70142.93.11(2.67–3.63)
  I48 Atrial fibrillation and flutterNo19,23519.01 (ref)
Yes112942.23.12(2.76–3.53)
  I50 Heart failureNo19,71219.41 (ref)
Yes65247.53.77(3.22–4.41)
  J44 Chronic obstructive pulmonary diseaseNo20,04619.81 (ref)
Yes31847.83.70(2.96–4.62)
  N18 Chronic renal failureNo20,17920.01 (ref)
Yes18553.04.51(3.37–6.04)
  Z92 Personal history of medical treatmentNo19,59619.31 (ref)
Yes76844.93.41(2.94–3.94)
  Z95 Presence of cardiac and vascular implants and graftsNo19,74119.61 (ref)
Yes62342.23.00(2.55–3.53)
 Diagnoses in open-clinic visits
  I25 Chronic ischaemic heart diseaseNo18,29419.21 (ref)
Yes207030.01.80(1.63–1.99)
  I48 Atrial fibrillation and flutterNo17,80818.51 (ref)
Yes255632.42.11(1.92–2.31)
  I50 Heart failureNo18,93618.91 (ref)
Yes142838.92.73(2.44–3.06)
  R06 Abnormalities of breathingNo19,44519.51 (ref)
Yes91935.82.30(1.99–2.64)
  R07 Pain in throat and chestNo19,50419.61 (ref)
Yes86036.32.34(2.02–2.70)
  Z51 Other medical careNo19,43119.51 (ref)
Yes93337.32.46(2.14–2.82)
Continuous Variablesa, b
 Age 81(75–106)1.05(1.04–1.05)
 Emergency room (ER) visits 0(0–25)1.52(1.47–1.57)
 Non-physician visits 4(0–210)1.02(1.02–1.03)
 Physician visits 3(0–100)1.08(1.07–1.09)
 Previous in-ward hospital stays 0(0–16)1.56(1.50–1.62)
  1. aMedians were reported as appropriate for continuous variables. bRange was reported as appropriate for continuous variables. OR Odds Ratio, CI Confidence interval. Hospital admissions within 12 months from the training sample (n = 20,364) expressed as crude odds ratios and 95% confidence intervals (CI) from univariable analysis. Variables are sorted by name and all p-values < 0.001