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Table 1 Antiviral therapy of adults hospitalized with influenza by age, comorbidity, severity and year

From: Trends in antiviral therapy of adults hospitalized with influenza in Canada since the end of the 2009 pandemic

Patient subgroup 2009-2010 2010-2011 2011-2012
Chronic heart disease 138 (88.5%) 315 (81.4%) 97 (66.4%)
   p = 0.045 p < 0.001
Chronic lung disease 364 (89.9%) 277 (82.9%) 123 (61.8%)
   p = 0.006 p < 0.001
Chronic renal disease 65 (89.0%) 103 (83.7%) 27 (77.1%)
   p = 0.305 p = 0.010
Immune suppressed 173 (91.5%) 147 (81.2%) 100 (80.0%)
   p = 0.004 p = 0.003
Diabetes 153 (92.6%) 196 (82.4%) 80 (57.6%)
   p = 0.003 p < 0.001
Pregnant 60 (88.2%) 28 (75.7%) 17 (73.9%)
   p = 0.10 p = 0.1.
Age ≥ 65 years 123 (82.0%) 607 (82.0%) 227 (64.3%)
   p = 0.994 p = 0.001
ICU admission 262 (94.2%) 120 (87.6%) 62 (79.5%)
   (p = 0.02) (p < 0.001)