Table 3

Factors associated with death in patients hospitalised with confirmed influenza infection as shown in a final Cox proportional hazards model (n=754)

VariablesAdjusted HR (95% CI)p Value
Oseltamivir treatment0.27 (0.13 to 0.55)<0.001
Age >70 years2.94 (0.85 to 10.18)0.088
Male sex3.92 (1.80 to 8.57)0.001
Major co-morbidity2.28 (1.02,5.09)0.045
Ventilatory support8.29 (3.97 to 17.29)<0.001
Nursing home resident7.62 (3.51 to 16.54)<0.001
  • Refer to tables 1 and 2 for explanation of variables compared. The outcome analysed was death that occurred within 21 days of hospitalisation. Potential confounders including ‘time from symptom onset to presentation’, ‘chronic lung diseases’ and ‘negative antigen test result’ were adjusted for in this model. Being managed in either hospital site was not found to affect outcomes in the model. There was also no significant difference in mortality found between influenza A and B subtypes.