Table 5. Risk reclassification improvement among womena; anthropometric measures and risk of death from cardiovascular disease.
Anthropometric measures | IDI (‰) | P | NRI 1b (‰) | P | NRI 2c (‰) | P | NRI 3d (‰) | P |
Model A e | ||||||||
Body mass index | 0.94 | 0.07 | 0.28 | 0.95 | −8.41 | 0.23 | −6.63 | 0.43 |
Waist circumference | 4.12 | <0.001 | 2.73 | 0.67 | 8.42 | 0.37 | 15.00 | 0.19 |
Hip circumference | 1.12 | 0.03 | −0.98 | 0.81 | −7.35 | 0.28 | −7.38 | 0.35 |
Waist-to-hip ratio | 5.01 | <0.001 | 2.15 | 0.77 | 26.76 | 0.009 | 32.21 | 0.01 |
Waist-to-height ratio | 4.36 | <0.001 | −4.39 | 0.51 | 10.77 | 0.26 | 9.10 | 0.43 |
Model B f | ||||||||
Body mass index | 0.84 | 0.15 | −3.27 | 0.42 | 5.90 | 0.35 | 5.36 | 0.48 |
Waist circumference | 3.46 | 0.002 | 7.09 | 0.26 | 30.25 | 0.001 | 43.01 | <0.001 |
Hip circumference | 1.11 | 0.07 | −2.80 | 0.53 | 6.36 | 0.34 | 6.98 | 0.38 |
Waist-to-hip ratio | 3.90 | 0.002 | −3.95 | 0.49 | 33.30 | <0.001 | 36.08 | <0.001 |
Waist-to-height ratio | 3.65 | 0.001 | 4.37 | 0.47 | 25.41 | 0.006 | 35.50 | 0.001 |
Abbreviations: IDI = integrated discrimination improvement, NRI = net reclassification improvement.
Participants with body mass index <18.5 kg/m2 were excluded from the analysis.
NRI when adding a given anthropometric measure to a prediction model using two risk categories (<5%, ≥5%).
Three risk categories (<1%, 1–9%, ≥10%).
Four risk categories (<1%, 1–4%, 5–9%, ≥10%).
Variable included in model: Age.
Variables included in model: Age, smoking status, systolic blood pressure, and total cholesterol.