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Table 1 Characteristics of included studies

From: A systematic review of tools for predicting severe adverse events following patient discharge from intensive care units

Study Year Country Follow-up Type of ICU # Patients Age (Mean) Female (%) Severity of Illness score (Mean) Readmission
No. (%)ε
Mortality
No. (%)ζ
Gajic 2008 USA, Netherlands 7 days Medical-Surgical 2,622 64µ 46µ APACHE III (59)µ 217 (8.3) 5 (0.4)µ
Frost 2010 Australia Hospital discharge Medical-Surgical 14,952 57 39 APACHE II (13) 896 (6.0) 869 (6.0)
Reini 2012 Sweden Hospital discharge Medical-Surgical 518 59 46 SAPS III (55) 13 (3.7) 29 (8.8)
Badawi 2012 USA 48 hours Mixed§ 704,963 62 46 APACHE IV (47β) 17,874 (2.5) 6,492 (0.9)
Daly 2001 UK Hospital discharge Medical-Surgical 13,924 67-72γ 36 APACHE II (13) 142 (2.6)µ 1,158 (8.3)
Fernandez 2006 Spain Hospital discharge Medical-Surgical 1,159 60 N/A APACHE II (20) N/A 111 (9.6)
Fernandez 2010 Spain Hospital discharge Medical-Surgical 3,587 61 33 N/A 190 (5.3) 242 (6.7)α
Ouanes 2012 France 7 days Medical-Surgical 3,462 61 38 SAPS II (35) 74 (2.1) 28 (0.8)
  1. APACHE, Acute Physiology and Chronic Health Evaluation; ICU, Intensive Care unit; N/A, Not Available; SAPS, Simplified Acute Physiology Score; UK, United Kingdom; USA, United States of America.
  2. ε Readmission to ICU following patient discharge from ICU.
  3. ζ Hospital mortality following patient discharge form ICU.
  4. µ Data from derivation cohort.
  5. § Mixed ICUs: Medical, Medical-Surgical, Surgical, Trauma, Neurological, Cardiac, Cardiovascular.
  6. β Median value.
  7. γ Range of median ages for the derivation and validation cohorts.
  8. † Point score estimated from predicted risk of death (percentage).
  9. α Sensitivity analyses restricted to unexpected deaths produced the same mortality percentage.