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Table 2 Comparison of management and outcomes associated with community and hospital-acquired influenza

From: Hospital-acquired influenza in an Australian tertiary Centre 2017: a surveillance based study

Variable No. (%) patients   
Community-acquired influenza Hospital-acquired influenza§ p Value Odds ratio
(95% CI)
Days from symptom onset to admission, median [IQR] 3 [2–5] na
Days from admission to symptom onset, median [IQR] na 13 [4–32]
Days from symptom onset to diagnosis, median [IQR] 3 [2–5] 1 [1–2] < 0.001
Received antivirals (oseltamivir) 233/250 (93.2) 24/27 (88.9) 0.426 0.58 (0.16–2.14)
Days from symptom onset to treatment, median [IQR] 3 [2–5] 2 [1–3] 0.022
Received antivirals within 48 h of symptom onset 82/206 (39.8) 15/24 (62.5) 0.033 2.52 (1.05–6.02)
ICU admission 39 (14.8) 3 (10.7) 0.778 0.69 (0.20–2.40)
Length of ICU stay, median days [IQR] 4 [3–6] 4 [4–4] 0.687
Length of hospital stay, median days [IQR] 5 [2–9] 38 [18–66] < 0.001
Days from diagnosis to discharge, median [IQR] 5 [3–9] 13 [6–33] < 0.001
30 Day outcome
 Still hospitalised 9/262 (3.4) 8 (28.6) < 0.001 11.24 (3.91–32.31)
 Discharged 237/262 (90.5) 18 (64.3) 0.001 0.19 (0.08–0.46)
 Readmitted for same illness 5/262 (1.9) 0 1
 Death in hospital (all cause) 11/262 (4.2) 2 (7.1) 0.363 1.76 (0.37–8.35)
  1. NOTE: CI Confidence interval, ICU Intensive care unit, IQR Interquartile range, na not applicable. Denominator is 264 unless otherwise specified. § Denominator is 28 unless otherwise specified