Research Article
Risk Factors for Mortality among 2009 A/H1N1 Influenza Hospitalizations in Maricopa County, Arizona, April 2009 to March 2010
Table 5
Final logistic regression model of risk of death based on A/H1N1 hospitalizations and obtained via backward elimination procedure.
| Risk factors | value | OR (95% CI)a |
| Age groups | | | <18 y | 0.004 | 0.27 (0.11, 0.66) | 18–49 y | 0.83 | 1.1 (0.47, 2.6) | ≥50 y | Ref value | 1 | Ethnicity/race | | | Unknown | 0.99 | 0 | Hispanics | 0.24 | 1.65 (0.72, 3.8) | Native American | 0.75 | 1.24 (0.33, 4.7) | Non-Hispanic black | 0.54 | 0.67 (0.20, 2.4) | Asian | 0.008 | 23.3 (2.3, 238.3) | Non-Hispanic white | Ref value | 1 | Pandemic wave | | | Fall wave | 0.001 | 3.94 (1.72, 9.03) | Chronic lung disease | 0.001 | 3.5 (1.66, 7.4) | Cancer within last 12 months | 0.02 | 4.3 (1.3, 14.8) | Immune suppression | 0.001 | 4.0 (1.84, 8.9) | Admission delay | <0.001 | 4.6 (2.2, 9.5) |
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aRisk of death among A/H1N1 inpatients. The corresponding Hosmer-Lemeshow test statistic for model fit () and the Cox and Snell .
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