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Table 4 Cox proportional hazard regression analysis to identify the factors associated with port-infection-free survival

From: Port type is a possible risk factor for implantable venous access port-related bloodstream infections and no sign of local infection predicts the growth of gram-negative bacilli

Clinical features

Univariate analysis

Multivariate analysis—maximal model

Multivariate analysis—reduced model

HR (95 % CI)

p value

HR (95 % CI)

p value

HR (95 % CI)

p value

Port type (TYCO vs. Bard)

4.759 (1.137–19.927)

0.0327

7.643 (1.795–32.535)

0.0059

7.105 (1.688–29.904)

0.0075

Gender (male vs. female)

2.849 (1.408–5.766)

0.0036

1.974 (0.934–4.172)

0.0748

  

Age (>65 vs. ≤65 years)

2.262 (1.154–4.436)

0.0175

2.083 (1.043–4.157)

0.0375

2.320 (1.179–4.564)

0.0148

Malignancy (lung cancer vs. others)

5.121 (2.610–10.050)

<0.0001

4.885 (2.362–10.104)

<0.0001

5.807 (2.946–11.447)

<0.0001

Surgeon (surgeon A vs. others)

0.862 (0.273–2.718)

0.8000

0.872 (0.271–2.810)

0.8184

  

Surgeon (surgeon B vs. others)

0.508 (0.171–1.511)

0.2234

0.86 (0.285–2.594)

0.7887