Table 5

Clinical outcomes including mortality, complications and admissions over 1 week audit and 3 years administrative data

Clinical outcome One week audit: all patientsNon-IDP
n (%) or median (mean) (IQR)
IDP
n (%) or median (mean) (IQR)
Total
n (%) or median (mean) (IQR)
Adjusted OR/RR* (95% CI)
(n=241)(n=56)(n=297)p Value*
30-day mortality36 (15%)7 (13%)43 (15%)1.36 (0.53 to 3.54)0.52
Escalation of therapy12 (5%)3 (5%)15 (5%)
Disease-specific complications2 (1%)0 (0%)2 (1%)
ICU admission4 (2%)2 (4%)6 (2%)
Readmission50 (21%)10 (18%)60 (20%)
Composite outcome87 (36%)19 (34%)106 (36%)1.21 (0.60 to 2.48)0.59
Admitted overnight168 (70%)49 (88%)217 (73%)3.53 (1.24 to 10.03)0.03
Length of stay2 (5.2) (2–6)4 (5.9) (3–6)3 (5.3) (2–6)1.19 (1.05 to 1.36)0.007
Treatment-related length of stay2 (4.2) (2–5)3 (5.0) (2–6)3 (4.3) (2–5)1.27 (1.11 to 1.47)0.001
One week audit: patients of uncertain diagnosis(n=78)(n=17)(n=95)
30-day mortality11 (14%)3 (18%)14 (15%)1.16 (0.26 to 5.17)0.85
Composite outcome31 (40%)6 (35%)37 (39%)0.99 (0.29 to 3.45)0.99
Administrative data, 1 Jan 2012–31 Dec 2014(n=47 108)(n=477)(n=47 585)
30 day mortality2987 (6.3%)27 (5.7%)3014 (6.3%)0.92 (0.62 to 1.37)0.68
Admitted overnight37 329 (79%)397 (83%)37 726 (79%)1.55 (1.20 to 2.01)0.001
Length of stay3 (6.8) (2–8)4 (7.7) (2–8)3 (6.8) (2–8)1.15 (1.11 to 1.19)<0.001
  • *Multivariable regression: 1-week data set: C reactive protein (CRP), white cell count (WCC) and Charlson score independently associated with 30-day mortality. Sepsis, Charlson score and admission with a frailty syndrome independently associated with adverse composite outcome. Charlson score, age and later time of day independently associated with admission. Charlson score, age, presentation with a frailty syndrome, community antibiotics, WCC and admission during a weekday independently associated with longer length of stay. Three-year data set: Charlson score, age, male gender and non-weekday admission independently associated with mortality, Charlson score, age hour of admission and non-weekday admission independently associated with admission overnight, Charlson score, female, age, hour of admission and non-weekday admission independently associated with longer length of stay.

  • ICU, intensive care unit; IDP, infectious diseases physician; RR, rate ratio.