Diagnostic performance analysis for diabetic cardiovascular autonomic neuropathy based on short-term heart rate variability using Bayesian methods: preliminary analysis

Table 3 Marginal prior and posterior medians and lower and upper limits of the posterior equally tailed 95 % credible interval for parameters of diagnostic tests

Variables	Prior information	Both tests combined (independence)		Both tests combined (dependent)
Variables	Prior information	HRV test	Ewing’s test	HRV test	Ewing’s test
Prevalence	0.300 (0.120–0.480)	0.429 (0.278–0.59)		0.403 (0.222–0.591)
Sensitivity	0.850 (0.720–0.980)	0.837 (0.681–0.948)	0.878 (0.748–0.962)	0.821 (0.626–0.95)	0.852 (0.698–0.956)
Specificity	0.850 (0.720–0.980)	0.837 (0.696–0.941)	0.745 (0.591–0.891)	0.797 (0.636–0.927)	0.695 (0.529–0.888)
Accuracy	0.850 (0.720–0.980)	0.835 (0.727–0.919)	0.810 (0.705–0.9)	0.807 (0.666–0.911)	0.774 (0.647–0.894)
PPV	0.708 (0.260–0.978)	0.796 (0.582–0.934)	0.720 (0.497–0.902)	0.733 (0.451–0.916)	0.651 (0.375–0.901)
NPV	0.923 (0.950–0.982)	0.874 (0.69–0.967)	0.892 (0.743–0.97)	0.873 (0.639–0.972)	0.876 (0.71–0.970)
ρ_P				0.335 (0.017–0.838)
ρ_N				0.344 (0.016–0.838)

Date represent to be mean and 95 % CI, PPV positive predictive value, NPV negative predictive value, ρ _P correlation coefficients of sensitivities of two tests, ρ _N correlation coefficients of specificities of two tests

ISSN: 1758-5996