Construction of a Prediction Model for the Mortality of Elderly Patients with Diabetic Nephropathy

Table 6

The predictive value of the model in different subgroups.

Subgroup	Sensitivity (95% CI)	Specificity (95% CI)	PPV (95% CI)	NPV (95% CI)	AUC (95% CI)	Accuracy (95% CI)
Gender
Male	0.90 (0.80–0.99)	0.39 (0.25–0.52)	0.54 (0.42–0.66)	0.83 (0.67–0.98)	0.66 (0.55–0.78)	0.61 (0.51–0.72)
Female	0.91 (0.79–1.00)	0.56 (0.41–0.71)	0.51 (0.36–0.67)	0.92 (0.82–1.00)	0.78 (0.65–0.91)	0.68 (0.56–0.79)
Age
>75 years	0.88 (0.75–1.00)	0.36 (0.22–0.50)	0.43 (0.30–0.57)	0.84 (0.68–1.00)	0.65 (0.52–0.78)	0.54 (0.43–0.66)
≤75 years	0.92 (0.83–1.00)	0.57 (0.43–0.72)	0.62 (0.49–0.75)	0.90 (0.79–1.00)	0.78 (0.68–0.88)	0.72 (0.63–0.82)
CKD
Yes	0.90 (0.80–1.00)	0.51 (0.39–0.63)	0.47 (0.34–0.59)	0.92 (0.83–1.00)	0.74 (0.64–0.84)	0.64 (0.54–0.73)
No	0.90 (0.79–1.00)	0.37 (0.19–0.55)	0.61 (0.47–0.76)	0.77 (0.54–1.00)	0.67 (0.52–0.82)	0.65 (0.53–0.77)
CVD
Yes	0.90 (0.82–0.98)	0.46 (0.34–0.58)	0.57 (0.46–0.67)	0.86 (0.75–0.97)	0.71 (0.61–0.80)	0.66 (0.57–0.74)
No	0.89 (0.68–1.00)	0.48 (0.28–0.68)	0.38 (0.17–0.59)	0.92 (0.78–1.00)	0.71 (0.50–0.92)	0.59 (0.42–0.75)

CI: confidence interval, AUC: area under the curve, NPV: negative predictive value, PPV: positive predictive value, CKD: chronic kidney disease, CVD: cardiovascular diseases.