Table 4 Simple and Multiple linear regression analyses on hospital length of stay

Exp (β) (95% confidence interval)

P-value

Exp (β) (95% confidence interval)

P-value

Age

1.103 (1.077–1.130)

< 0.001***

1.072 (1.046-1.100)

< 0.001***

Female (vs. Male)

0.864 (0.600-1.244)

0.432

0.931 (0.646–1.341)

0.700

Prior vaccination, Yes (vs. No)

0.708 (0.485–1.035)

0.075

0.829 (0.567–1.211)

0.332

CURB score

 Low

Ref

Ref

Ref

Ref

 Moderate

5.438 (3.668–8.061)

< 0.001***

4.150 (2.771–6.214)

< 0.001***

 High

24.840 (12.010-51.373)

< 0.001***

17.294 (8.288–36.087)

< 0.001***

CCI score

 0

Ref

Ref

Ref

Ref

 1

1.211 (0.547–2.682)

0.637

1.361 (0.618–2.998)

0.445

 2+

1.933 (0.963–3.880)

0.064

1.795 (0.898–3.588)

0.098