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Table 4 Improvement in discrimination and risk reclassification for cardiovascular events after adding abdominal obesity indices

From: Association between abdominal obesity indices and risk of cardiovascular events in Chinese populations with type 2 diabetes: a prospective cohort study

Model

C-statistic

(95% CI)

P-value

IDI

(95% CI)

P-value

NRI

(95% CI)

P-value

Basic model

0.701 (0.672–0.731)

Ref.

Ref.

 

Ref.

 

 + WC

0.735 (0.708–0.762)

 < 0.001

0.026 (0.012–0.046)

 < 0.001

0.217 (0.133–0.273)

 < 0.001

 + VAI

0.709 (0.679–0.738)

0.169

0.006 (0.001–0.013)

0.014

0.249 (0.099–0.349)

0.008

 + LAP

0.740 (0.713–0.768)

 < 0.001

0.042 (0.026–0.062)

 < 0.001

0.306 (0.213–0.381)

 < 0.001

 + CVAI

0.751 (0.724–0.777)

 < 0.001

0.043 (0.025–0.066)

 < 0.001

0.266 (0.187–0.332)

 < 0.001

  1. The basic model included gender, age, ethnicity, education, smoking status, drinking status, low-density lipoprotein cholesterol, total cholesterol, fasting blood glucose, systolic blood pressure, diastolic blood pressure, physical activity, antidiabetic agents, and diabetes duration
  2. CI confidence interval, C-statistic Harrell's concordance statistic, IDI integrated discrimination improvement, NRI net reclassification improvement, WC waist circumference, VAI visceral adiposity index, LAP lipid accumulation product, CVAI Chinese visceral adiposity index