Table 6 The result of two-piecewise linear regression model.

From: Body mass index and mortality after elective open abdominal aortic aneurysm repair in a fifteen year multicenter cohort study

Outcome: mortality

HR (95%CI) p-value

Standard linear regression model

0.972 (0.957, 0.988) <0.001

Fitting model by two-piecewise linear regression

 

Inflection points of BMI (kg/m2)

25.78

< 25.78

0.920 (0.893, 0.949) <0.001

≥25.78

1.014 (0.989, 1.039) 0.279

P for log-likelihood ratio test

< 0.001

  1. Adjusted age, sex, perioperative bleeding, hypertension, DM, smoking status, HGB, Scr, ASA score, total transfusion, cardiac disease, cerebrovascular disease, intestinal ischemia, cardiac complications, pulmonary complications, embolus, smoking status.
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