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Sentinel Foods: Monitoring and Trends
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The Nutrient Data Laboratory (NDL) sampled Sentinel Foods mainly in 2010-13 nationwide, followed by chemical analysis in laboratories to determine levels of sodium and related nutrients (potassium, total and saturated fat, total dietary fiber, and total sugar). NDL tracks changes in the nutrient levels in Sentinel Foods by comparing the levels in the 2010-13 samples (baseline) to nutrient values from re-sampling (2014 onwards). The Sodium Monitoring Dataset has baseline information on sodium and related nutrients for all 125 Sentinel Foods under the tab "Sentinel Foods - Baseline," and changes in levels of sodium and related nutrients from re-sampling and analysis of more than 10% under the tab "Sentinel Foods - Monitoring." Additional details on the baseline content of Sentinel Foods are available in volume 2, 2015 edition of Preventive Medicine Reports at http://www.sciencedirect.com/science/article/pii/S2211335515001606.

 

As of July 2016, NDL has re-sampled and analyzed 11 foods. Of these 3 foods have changed more than 10% from baseline. The table below presents the changes in sodium for these foods.

 

Sentinel Food

NDB_No2

Year Sampled

Sodium (mg/100g)

% Change3

 

 

 

N

Mean (SEM)

Range

 

Beef hot dog

07022

2010

18

992 (9.677)

860-1190

-13*

2015

17

865 (9.419)

732-1040

Green beans, canned

11056

2010

3

230

211-268

17

2015

12

268 (11.535)

183-328

Ham, packaged and deli

07028

2011

5

1279 (111.891)

900-1490

-26

2015

18

945 (30.989)

647-1320

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SEM: standard error of the mean, SR: National Nutrient Database for Standard Reference

1The changes in nutrient values may reflect reformulations of products or changes in the market shares of the brands.

2This five=digit number uniquely identifies a food item in USDA's National Nutrient Database for Standard Reference (SR) and is used for representing the Sentinel Food.

3Percent change is calculated using the formula: ((Re-sampled Nutrient Value - Baseline Nutrient Value)/Baseline Nutrient Value) * 100. Tested for significance of difference (p<0.05) using independent sample t tests or Mann-Whitney U tests. Statistical tests were not done when data were skewed or multi-modal, extremely heteroscedastic, large differences were seen in sample sizes, sample sizes were insufficient, or when the differences were lower than 10%. Statistically significant differences (p>0.05) are identified with an *.

 

 

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