Table 2.

Reliability test of the NVS (n = 174)

Item	Question	Mean (SD)	Corrected item-total correlation	Cronbach’s alpha if item deleted
Item 1	If you eat the entire container, how many calories will you eat?	0.70 (0.46)	0.59	0.77
Item 2	If you are allowed to eat 60 g of carbohydrates as a snack, how much ice cream could you have?	0.61 (0.49)	0.64	0.76
Item 3	Your doctor advises you to reduce the amount of saturated fat in your diet. You usually have 42 g of saturated fat each day, which includes one serving of ice cream. If you stop eating ice cream, how many grams of saturated fat would you be consuming each day?	0.48 (0.50)	0.54	0.78
Item 4	If you usually eat 2,500 calories in a day, what percentage of your daily value of calories will you be eating if you eat one serving?	0.47 (0.50)	0.51	0.79
Item 5	Is it safe for you to eat this ice cream?	0.77 (0.42)	0.49	0.79
Item 6	(Ask only if the patient responds “no” to question 5): Why not?	0.70 (0.46)	0.62	0.76

Note: Cronbach’s alpha was 0.80 for the total scale.

Abbreviation: NVS, Newest Vital Sign.