Table 2 Cox proportional hazard and frailty models, post discharge survival

Infection (reference = No Infection)

Sepsis

1.36

1.20-1.54

<0.01

1.39

1.22-1.59

<0.01

Sepsis x Year 1

1.21

1.04-1.42

0.02

1.17

1.00-1.37

0.05

Pneumonia

1.55

1.42-1.70

<0.01

1.58

1.42-1.76

<0.01

Pneumonia x Year 1

1.15

1.02-1.30

0.02

1.11

0.98-1.25

0.11

Sepsis & Pneumonia

0.66

0.55-0.80

<0.01

0.66

0.55-0.80

<0.01

Gender (reference = Male)

Female

0.89

0.85-0.94

<0.01

0.89

0.85-0.94

<0.01

Race (reference = White)

Black

1.04

0.96-1.13

0.33

1.04

0.96-1.13

0.34

Other

0.96

0.84-1.09

0.49

0.95

0.84-1.08

0.46

Age Group (reference < 50)

 50 to 64

1.76

1.49-2.08

<0.01

1.75

1.48-2.07

<0.01

 65 to 74

2.07

1.77-2.41

<0.01

2.06

1.76-2.41

<0.01

 75 to 84

3.12

2.67-3.64

<0.01

3.10

2.64-3.64

<0.01

 85 to 94

5.25

4.47-6.16

<0.01

5.21

4.36-6.21

<0.01

 95 and above

8.38

6.68-10.52

<0.01

8.26

6.47-10.55

<0.01

Insurance (reference = non Medicaid)

Medicaid

1.22

1.14-1.30

<0.01

1.22

1.14-1.30

<0.01

Number of subjects

17537

17537

Number of failures

9694

9694

Log pseudolikelihood

−89334.21

−26182.6