. Author manuscript; available in PMC: 2015 Sep 23.

Published in final edited form as: Respir Care. 2013 Oct 8;59(5):644–653. doi: 10.4187/respcare.02505

Table 3.

Risk of Death in Patients Admitted With Asthma Exacerbations: 2000 versus 2008

Models	Risk of Death in 2000 vs 2008, Odds Ratio (95% CI)
Unadjusted	0.83 (0.66–1.04)
Adjusted for demographics (age, gender, race)^*	0.67 (0.53–0.84)
Adjusted for demographics and comorbidity index^*	0.58 (0.45–0.73)
Adjusted for above and mechanical ventilation^*	0.64 (0.51–0.81)
Subgroup analysis adjusting for demographics and comorbidity index
Among those not receiving mechanical ventilation^*	0.57 (0.45–0.73)
Among those receiving early NIV	0.41 (0.07–2.14)
Among those receiving early invasive mechanical ventilation	1.08 (0.63–1.84)

Significant difference between 2000 and 2008 at P < .05

NIV = noninvasive ventilation