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. 2014 Aug 21;2(3):e37. doi: 10.2196/mhealth.3230

Table 3.

Data availability and imputation for nutrient profile scoring.

Nutrient Availability
Energy Complete
Protein Complete
Total sugar Complete
Saturated fat Complete
Sodium Complete
Dietary fiber Partial data were available: products in a food category known not to contain fiber (eg, eggs) were assigned a fiber score of 0; products with data available were assigned an individual fiber score; and products with no data but in a category of foods known to contain fiber were assigned an imputed value. The imputed value was the average for all products in the category with data.
Calcium Partial data were available for cheese and processed cheese categories, which require a calcium value for the calculation of the nutrient profile score: products with data available were assigned an individual calcium score, and products with missing data were assigned an imputed value. The imputed value was the average for all products in the category with data.
Percentage content of fruit, vegetables, nuts, and legumes (%F&V) No data were available: products in food categories known not to contain appreciable amounts of fruit and vegetables (eg, dairy milk) were assigned a %F&V score of 0; and products in food categories known to contain fruit and vegetables were assigned imputed %F&V scores.