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. Author manuscript; available in PMC: 2013 Jun 25.
Published in final edited form as: J Hosp Med. 2007 Jan;2(1):5–12. doi: 10.1002/jhm.143

Table 3.

Multivariate model of statistically significant (P < 0.005) predictors of 30 day mortality from the CBC and automated differential count pared by stepwise backwards selection.

Parameter Odds Ratio Confidence Interval P Value
Age (years) 1.040 1.037–1.043 <0.0001
Gender (male) 1.965 1.746–2.213 <0.0001
WBC > 12,000 1.701 1.508–1.919 <0.0001
Hematocrit (> 54) 2.331 1.438–3.780 <0.0006
Hematocrit (< 37) 1.714 1.514–1.941 <0.0001
MCV (> 94) 1.352 1.186–1.543 <0.0001
High RDW (>14.5) 1.463 1.291–1.658 <0.0001
Lymphocytosis (>4000) 2.848 2.435–3.332 <0.0001
Metamyeloctye (y/n) 2.074 1.666–2.581 <0.0001
Macrocytes (y/n) 1.317 1.127–1.539 <0.0005
Toxic Granules (y/n) 1.494 1.200–1.859 0.0003
Sickle Cells (y/n) 0.039 0.005–0.292 0.0016
Burr Cells (y/n) 3.254 2.347–4.513 <0.0001
Band Forms (y/n) 1.586 1.386–1.814 <0.0001
NRBCs (y/n) 2.906 2.240–3.770 <0.0001