Table 3.

The total score in the Virtual Supermarket Program and the discriminant results of age stratification.

		Optimal cutoff	Sensitivity, %	Specificity, %	Area under the receiver operation characteristic curve	95% CI	P value	Youden index J
Entire sample		46.4	85.90	79.00	0.870	0.799-0.924	<.001	0.650
Age (years)
	≤85	46.5	72.73	86.79	0.840	0.752-0.907	<.001	0.600
	>85	47.3	94.44	80.00	0.936	0.775-0.993	<.001	0.744