Table 2.

Univariate and multivariate analyses of factors related to 30-day mortality of patients younger than 74 years-old

		Univariate Logistic Regression		Multivariate Logistic		Regression
Variable	OR	95%CI	P value	OR	95%CI	P value
Age (years)	1.07	0.98–1.17	0.11
Sexa	1.41	0.36–5.46	0.62
Category of pneumoniab	4.08	1.20–13.93	0.02c	1.05	0.09-12.71	0.97
PSI class	2.72	1.40–5.29	< 0.01c	1.29	0.39-4.29	0.68
BMI (kg/m2)	0.58	0.42–0.79	< 0.01c	0.46	0.27-0.80	< 0.01c
Albumin (g/dL)	0.07	0.02–0.25	< 0.01c	0.05	0.00-0.73	0.03c
PCT (ng/mL)	1.07	1.02–1.13	0.01c	1.05	0.98-1.12	0.19
CRP (mg/dL)	1.07	1.02–1.14	0.01c	0.93	0.83-1.05	0.24
WBC(/mm3)	1.00	0.99–1.00	0.44
BUN(mg/dL)	1.07	1.03–1.11	< 0.01c	1.08	1.00-1.17	0.04c
CCI	1.50	0.92-2.42	0.10

OR Odds ratio, Cl Confidence interval, RSI Pneumonia severity index, BMI Body mass index, PCT Procalcitonin, CRP C-reactive protein, WBC White blood cell, BUN Blood urea nitrogen, CCI Charlson comorbidity index

^a Female vs male

^b Healthcare-associated pneumonia vs community acquired pneumonia

^cStatistically significant