Table 4.

Risk factors associated with PNUs among HIV positive patients. Unadjusted odds ratio and adjusted odds ratio^*.

Variables	Crude Odds Ratio (95% CI)	Adjusted Odds Ratio*(95% CI)
Mechanical ventilator use before PNU	19.25 (14.02,26.43)	6.07 (3.76, 9.78)
Symptomatic HIV	5.74 (3.7, 8.89)	6.18 (3.47, 10.98)
Renal failure	2.73 (2.05, 3.65)	1.36 (0.96,1.92)
ICU stay	7.65 (5.72, 10.22)	2.12 (1.35, 3.33)
Stay in skilled nursing facility	2.84 (1.38, 5.89)	2.16 (0.98 4.72)
Charlson Co-morbidity Score	1.143 (1.10, 1.19)	0.93 (0.87, 1)
Immunosuppressive and chemotherapeutic agents	5.42 (4.05, 7.25)	2.08(2.03, 3.86)

^*Results from the multivariable logistic regression model with all significant risk factors in simple logistic regression analysis.