Table 3 The variables that were most significantly associated with mortality in a multivariate logistic regression analysis

Group 1 (age 65−79 years, without severe functional dependency); the reference group

<0.001

−

−

Group 2 (age ≥ 80 years, without severe functional dependency)

0.20

2.63

0.60−11.42

Group 3 (age 65−79 years, with severe functional dependency)

0.58

1.46

0.38−5.59

Group 4 (age ≥ 80 years, with severe functional dependency)

<0.001

10.42

3.27−33.24

Pneumonia

0.022

3.92

1.22−12.54

Heart failure

0.028

2.84

1.12−7.21

Male sex

0.057

2.37

0.98−5.76

Serum C-reactive protein (for each 10 mg/l increment)

0.026

1.06

1.01−1.11

Renal failure

0.074

2.20

0.93−5.22