Table 2 Multiple Cox regression analysis of survival of ICU-acquired infection patients by ward type

Age

Year

1.01* (1.009–1.01)

1.009* (1.007–1.01)

1.017* (1.015–1.019)

0.99 (0.98–1)

–

Gender

Male

1

1

1

1

1

Female

1.06* (1.01–1.11)

1.06 (0.99–1.14)

1.13* (1.05–1.22)

–

–

Hospitalization-infection length

≤8 days

1

1

1

1

1

> 8 days

0.36* (0.34–0.38)

0.37* (0.34–0.4)

0.42* (0.39–0.46)

0.45* (0.35–0.57)

0.39* (0.32–0.48)

Infection type

BSI

–

1.5* (1.15–1.95)

1.5* (1.26–1.78)

–

2.35* (1.3–4.26)

PENU & LRI

–

1.35* (1.02–1.77)

0.96 (0.79–1.17)

–

1.26 (0.69–2.31)

SSI

1

1

1

1

1

UTI

–

1.23 (0.95–1.59)

1.04 (0.87–1.24)

–

0.56 (0.27–1.18)

VAE

–

1.51* (1.19–1.93)

1.33* (1.14–1.54)

–

2.05* (1.09–3.87)

Other

–

1.43* (1.07–1.92)

1.9* (1.54–2.34)

–

0.62 (0.33–1.17)

Device use

No

1

1

1

1

1

Yes

1.16* (1.1–1.23)

–

–

1.19 (0.95–1.48)

1.26* (1.02–1.56)

Microorganism

Staphylococcus epidermidis

1

1

1

1

1

Staphylococcus aureus

0.98 (0.81–1.19)

1.31 (0.99–1.74)

1.56* (1.1–2.2)

–

0.52 (0.21–1.27)

Coagulase negative staphylococci

1.1 (0.88–1.38)

1.54* (1.08–2.19)

1.5* (1.01–2.21)

–

0.76 (0.4–1.46)

Acinetobacter

1.25* (1.06–1.48)

1.31* (1.03–1.66)

1.97* (1.45–2.68)

–

2.91* (1.86–4.54)

Escherichia coli

1.09 (0.92–1.3)

1.41* (1.1–1.82)

1.77* (1.29–2.42)

–

1.41 (0.83–2.39)

Enterobacter

1.04 (0.85–1.27)

1.27 (0.96–1.69)

1.32 (0.91–1.9)

–

2.92* (1.77–4.81)

Enterococcus

0.97 (0.77–1.23)

1.26 (0.9–1.76)

2.09* (1.44–3.03)

–

1.74 (0.84–3.61)

Pseudomonas aeruginosa

0.9 (0.75–1.08)

1.02 (0.78–1.33)

1.41* (1.01–1.95)

–

2.13* (1.21–3.75)

Citrobacter

1.05 (0.73–1.32)

1.19 (0.75–1.88)

1.49* (1.01–2.2)

–

2.25 (0.97–5.17)

Candida

1.23* (1.01–1.51)

1.54* (1.15–2.06)

2.76* (1.95–3.9)

–

4.9* (2.22–10.81)

Candida albicans

1.26 (0.99–1.61)

1.42 (0.99–2.05)

1.64* (1.09–2.47)

–

2.95* (1.33–6.5)

Klebsiella

0.97 (0.82–1.16)

1.4* (1.09–1.8)

1.62* (1.17–2.24)

–

2.52* (1.56–4.04)

Klebsiella pneumoniae

0.96 (0.8–1.15)

1.29 (0.98–1.69)

1.77* (1.29–2.45)

–

2.3* (1.3–4.08)

Other

0.99 (0.83–1.19)

1.16 (0.89–1.52)

1.61* (1.36–2.56)

–

1.56 (0.96–2.55)

Unknown

1.25* (1.05–1.49)

1.4* (1.08–1.81)

1.87* (1.17–2.22)

–

1.86* (1.19–2.9)

Hospital type

Government

–

1.34* (1.09–1.64)

–

–

–

Semi-government

–

1.5* (1.16–1.92)

–

–

–

Private

1

1

1

1

1

Other

–

1.07 (0.84–1.37)

–

–

–