Table 3.
Univariate and multivariate analyses of factors related to 30-day mortality of patients older than 75 years-old
| Univariate Logistic Regression | Multivariate Logistic Regression | |||||
|---|---|---|---|---|---|---|
| Variable | OR | 95%CI | P value | OR | 95%CI | P value |
| Age (years) | 1.05 | 1.00–1.10 | 0.04c | 1.02 | 0.96-1.08 | 0.60 |
| Sexa | 1.27 | 0.70–2.32 | 0.43 | |||
| Category of pneumoniab | 2.14 | 1.18–3.86 | 0.01c | 0.86 | 0.38-1.95 | 0.71 |
| PSI class | 4.24 | 2.59–6.94 | < 0.01c | 2.02 | 1.05-3.88 | 0.04c |
| BMI (kg/m2) | 0.80 | 0.73–0.88 | < 0.01c | 0.84 | 0.75-0.94 | < 0.01c |
| Albumin (g/dL) | 0.38 | 0.26–0.54 | < 0.01c | 0.31 | 0.14-0.66 | < 0.01c |
| PCT (ng/mL) | 1.02 | 1.00–1.03 | 0.04c | 1.01 | 0.98-1.03 | 0.62 |
| CRP (mg/dL) | 1.04 | 1.00–1.07 | 0.02c | 1.01 | 0.97-1.06 | 0.56 |
| WBC(/mm3) | 1.00 | 1.00–1.00 | 0.29 | |||
| BUN(mg/dL) | 1.04 | 1.02–1.05 | < 0.01c | 1.01 | 0.99-1.03 | 0.24 |
| CCI | 1.27 | 1.00–1.62 | 0.04c | 1.07 | 0.77-1.48 | 0.69 |
OR Odds ratio, Cl Confidence interval, PSI 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