Variables | Total sample | 30-day unplanned readmission (%)a | 30-day mortality (%)a | |
---|---|---|---|---|
n | %a | |||
Sociodemographic | ||||
 Age (years, at index admission) | ||||
  45– < 75 | 1303 | 26 | 20 | 1.8 |
  75– < 85 | 2142 | 42 | 22 | 3.5 |
   ≥ 85 | 1629 | 32 | 20 | 5.5 |
   Mean (SD) | 80 (9.4) | 80 (8.8) | 84 (8.4) | |
 Sex | ||||
  Male | 2927 | 58 | 22 | 4.0 |
  Female | 2147 | 42 | 19 | 3.2 |
 Language other than English | ||||
  Yes | 559 | 11 | 21 | 3.4 |
  No | 4515 | 89 | 21 | 3.7 |
 Marital status | ||||
  Married | 2864 | 56 | 20 | 3.6 |
  Not married | 2210 | 44 | 21 | 3.8 |
 Region of residence | ||||
  Major cities | 2535 | 50 | 20 | 4.1 |
  Regional | 1566 | 31 | 21 | 3.5 |
  Remote | 973 | 19 | 22 | 2.9 |
 Education | ||||
  No school certificate | 1134 | 23 | 21 | 3.8 |
  School/Trade certificate, diploma | 3211 | 66 | 22 | 3.5 |
  Tertiary degree | 524 | 11 | 18 | 5.0 |
  Unknown | 205 |  |  |  |
 Household income (AUD) | ||||
   < 20,000 | 1994 | 57 | 31 | 5.5 |
  20,000–39,000 | 914 | 26 | 28 | 5.7 |
  40,000–69,999 | 363 | 10 | 28 | 4.8 |
   ≥ 70,000 | 220 | 6.3 | 26 | 4.0 |
  Unknown | 1583 |  |  |  |
 Private health insurance | ||||
  Yes | 2131 | 42 | 19 | 3.8 |
  No | 2943 | 58 | 22 | 3.6 |
Baseline health (self-reported) | ||||
 Previous heart disease | ||||
  Yes | 2408 | 47 | 21 | 3.5 |
  No | 2666 | 53 | 20 | 3.8 |
 Previous diabetes | ||||
  Yes | 1213 | 24 | 21 | 3.1 |
  No | 3861 | 76 | 21 | 3.9 |
 Excellent memory | ||||
  Yes | 505 | 10 | 21 | 3.0 |
  No | 4569 | 90 | 21 | 3.7 |
 Physical functioning score | ||||
  0– < 75 (severe) | 2662 | 70 | 28 | 5.8 |
   ≥ 75 | 1127 | 30 | 25 | 2.7 |
  Unknown | 1285 |  |  |  |
 Duke Social Support Index | ||||
   Mean (SD) | 8.7(1.6) | 8.6 (1.6) | 8.6 (1.7) | |
 Psychological distress | ||||
  Very low | 3478 | 74 | 22 | 4.5 |
  Low | 770 | 16 | 24 | 2.2 |
  Medium | 312 | 6.6 | 27 | 4.5 |
  High | 140 | 3 | 25 | 3.1 |
  Unknown | 374 |  |  |  |
 BMI | ||||
  Underweight | 128 | 2.8 | 27 | 7.9 |
  Normal | 1577 | 35 | 24 | 4.8 |
  Overweight | 1616 | 36 | 24 | 3.8 |
  Obese | 1191 | 26 | 20 | 2.3 |
  Unknown | 562 |  |  |  |
 Smoking status | ||||
  Current smoker | 273 | 5.4 | 26 | 5.2 |
  Ex-smoker | 2384 | 47 | 21 | 3.4 |
  Never smoker | 2388 | 47 | 20 | 3.8 |
  Unknown | 29 |  |  |  |
 Alcohol (drinks per week) | ||||
  None | 2230 | 46 | 22 | 3.8 |
  1–14 drinks | 2083 | 43 | 22 | 4.3 |
   ≥ 15 drinks | 522 | 11 | 20 | 2.8 |
  Unknown | 239 |  |  |  |
Hospitalisation history (Admitted Patient Data Collection, 6Â year prior to baseline) | ||||
 Previous CVD | ||||
  Yes | 4669 | 92 | 21 | 3.6 |
  No | 405 | 8 | 15 | 4.4 |
 Previous heart failure | ||||
  Yes | 1176 | 23 | 24 | 4.2 |
  No | 3898 | 77 | 20 | 3.5 |
 Previous renal disease | ||||
  Yes | 564 | 11 | 26 | 3.9 |
  No | 4510 | 89 | 20 | 3.6 |
 Previous anaemia | ||||
  Yes | 900 | 18 | 26 | 4.6 |
  No | 4174 | 82 | 20 | 3.5 |
 Previous atrial fibrillation | ||||
  Yes | 1422 | 28 | 22 | 3.2 |
  No | 3652 | 72 | 20 | 3.8 |
 Previous dementia | ||||
  Yes | 73 | 1.4 | 18 | 6.9 |
  No | 5001 | 99 | 21 | 3.6 |
Hospitalisation history (Admitted Patient Data Collection, 12Â months prior to index admission) | ||||
 No. of admissions (last 12 months) | ||||
   Mean (SD) | 1.3 (2.9) | 1.9 (5.0) | 1.8 (3.4) | |
 No. of hospital days (last 12 months) | ||||
   Mean (SD) | 7.0 (15) | 9.2 (18) | 11 (18) | |
Index admission characteristics | ||||
 Primary diagnosis | ||||
  Yes | 1973 | 39 | 20 | 2.3 |
  No | 3101 | 61 | 21 | 4.6 |
 Unplanned admission | ||||
  Yes | 4180 | 82 | 22 | 3.8 |
  No | 894 | 18 | 16 | 3.2 |
 Length of stay (days) | ||||
  1 | 450 | 8.9 | 18 | 2.7 |
  2–6 | 1922 | 38 | 20 | 2.5 |
   ≥ 7 | 2702 | 53 | 21 | 4.7 |
 Current comorbidity (Charlson Index) | ||||
  Minor | 2933 | 58 | 19 | 2.7 |
  Moderate | 1403 | 28 | 22 | 4.0 |
  Severe | 738 | 15 | 25 | 6.8 |
 Length of stay (days) | ||||
  Median (IQR) | 7 (10) | 7 (12) | 12 (18) | |
Hospital characteristics | ||||
 Hospital peer group | ||||
  Principal referral | 2493 | 49 | 22 | 3.4 |
  Major city | 537 | 11 | 20 | 5.0 |
  District | 606 | 12 | 21 | 4.1 |
  Community | 355 | 7 | 26 | 3.4 |
  Private | 900 | 18 | 17 | 3.7 |
  Others | 183 | 3.6 | 17 | 2.7 |
 Heart failure service | ||||
  Yes | 1695 | 33 | 22 | 3.6 |
  No | 3379 | 67 | 20 | 3.7 |
Totals | 5074 | 100 | 21 | 3.7 |