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Price Changes and Nutrient Profiling Among Adult Grocery Shoppers

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT02376530
Recruitment Status : Completed
First Posted : March 3, 2015
Results First Posted : March 6, 2017
Last Update Posted : March 6, 2017
Sponsor:
Information provided by (Responsible Party):
State University of New York at Buffalo

Study Type Interventional
Study Design Allocation: Randomized;   Intervention Model: Factorial Assignment;   Masking: Single (Participant);   Primary Purpose: Basic Science
Conditions Nutrition
Food Purchases
Interventions Behavioral: Nutrient profiling
Behavioral: Price Changes
Enrollment 788
Recruitment Details Participants were recruited from the WNY community between 2012-2014.
Pre-assignment Details  
Arm/Group Title Usual Shopping Nutrient Profiling Price Change Nutrient Profiling and Price Change
Hide Arm/Group Description No change in condition. Nutrient profiling system will be present during shopping session. Price changes will be present during shopping session. Nutrient profiling system and price changes will be present during shopping session.
Period Title: Overall Study
Started 196 198 197 197
Completed 196 198 197 197
Not Completed 0 0 0 0
Arm/Group Title Usual Shopping Nutrient Profiling Price Change Nutrient Profiling and Price Change Total
Hide Arm/Group Description No change in condition. Nutrient profiling system will be present during shopping session. Price changes will be present during shopping session. Nutrient profiling system and price changes will be present during shopping session. Total of all reporting groups
Overall Number of Baseline Participants 196 198 197 197 788
Hide Baseline Analysis Population Description
[Not Specified]
Age, Continuous  
Mean (Standard Deviation)
Unit of measure:  Years
Number Analyzed 196 participants 198 participants 197 participants 197 participants 788 participants
43.1  (8.6) 42.5  (8.8) 42.4  (8.2) 41.6  (7.8) 42.4  (8.4)
Gender  
Measure Type: Count of Participants
Unit of measure:  Participants
Number Analyzed 196 participants 198 participants 197 participants 197 participants 788 participants
Female
196
 100.0%
198
 100.0%
197
 100.0%
197
 100.0%
788
 100.0%
Male
0
   0.0%
0
   0.0%
0
   0.0%
0
   0.0%
0
   0.0%
Ethnicity (NIH/OMB)  
Measure Type: Count of Participants
Unit of measure:  Participants
Number Analyzed 196 participants 198 participants 197 participants 197 participants 788 participants
Hispanic or Latino
7
   3.6%
12
   6.1%
8
   4.1%
11
   5.6%
38
   4.8%
Not Hispanic or Latino
188
  95.9%
185
  93.4%
188
  95.4%
185
  93.9%
746
  94.7%
Unknown or Not Reported
1
   0.5%
1
   0.5%
1
   0.5%
1
   0.5%
4
   0.5%
Race (NIH/OMB)  
Measure Type: Count of Participants
Unit of measure:  Participants
Number Analyzed 196 participants 198 participants 197 participants 197 participants 788 participants
American Indian or Alaska Native
1
   0.5%
1
   0.5%
1
   0.5%
2
   1.0%
5
   0.6%
Asian
2
   1.0%
5
   2.5%
2
   1.0%
3
   1.5%
12
   1.5%
Native Hawaiian or Other Pacific Islander
0
   0.0%
1
   0.5%
0
   0.0%
1
   0.5%
2
   0.3%
Black or African American
44
  22.4%
39
  19.7%
47
  23.9%
39
  19.8%
169
  21.4%
White
135
  68.9%
140
  70.7%
140
  71.1%
140
  71.1%
555
  70.4%
More than one race
9
   4.6%
8
   4.0%
3
   1.5%
5
   2.5%
25
   3.2%
Unknown or Not Reported
5
   2.6%
4
   2.0%
4
   2.0%
7
   3.6%
20
   2.5%
Region of Enrollment  
Measure Type: Number
Unit of measure:  Participants
United States Number Analyzed 196 participants 198 participants 197 participants 197 participants 788 participants
196 198 197 197 788
Body Mass Index (BMI)  
Mean (Standard Deviation)
Unit of measure:  Kg/m^2
Number Analyzed 196 participants 198 participants 197 participants 197 participants 788 participants
31.0  (8.0) 30.8  (7.9) 30.9  (8.2) 31.3  (8.7) 31.0  (8.2)
1.Primary Outcome
Title Nutritional Quality of Food Purchases
Hide Description The Overall Nutrient Quality Index (ONQI) was used to assess nutritional quality of foods purchased. The ONQI is a 1 - 100 scale in which higher numbers indicate higher nutritional quality. Each food is given a score based on a ratio with positive health nutrients in the numerator and detrimental health nutrients in the denominator, based on a proprietary algorithm created by NuVal. The average ONQI score for all the groceries purchases was used as the outcome measure, of ONQI scores on a scale.
Time Frame Participants were followed for one shopping session, an average of 2.5 hours
Hide Outcome Measure Data
Hide Analysis Population Description
Data was analyzed for 781 participants. Two participants did not understand the study, 2 participants had incorrect price manipulations during their session, 1 participant was ill during the session, 1 participant had her young daughter in the room during the experiment and 1 participant did not have a household to shop for.
Arm/Group Title Usual Shopping Nutrient Profiling Price Change Nutrient Profiling and Price Change
Hide Arm/Group Description:
No change in condition.
Nutrient profiling system will be present during shopping session.
Price changes will be present during shopping session.
Nutrient profiling system and price changes will be present during shopping session.
Overall Number of Participants Analyzed 193 197 196 195
Least Squares Mean (Standard Deviation)
Unit of Measure: Average NUVAL Score
37.62  (14.84) 41.12  (15.06) 39.66  (13.30) 41.01  (14.21)
Time Frame [Not Specified]
Adverse Event Reporting Description [Not Specified]
 
Arm/Group Title Usual Shopping Nutrient Profiling Price Change Nutrient Profiling and Price Change
Hide Arm/Group Description No change in condition. Nutrient profiling system will be present during shopping session. Price changes will be present during shopping session. Nutrient profiling system and price changes will be present during shopping session.
All-Cause Mortality
Usual Shopping Nutrient Profiling Price Change Nutrient Profiling and Price Change
Affected / at Risk (%) Affected / at Risk (%) Affected / at Risk (%) Affected / at Risk (%)
Total   --/--   --/--   --/--   --/-- 
Hide Serious Adverse Events
Usual Shopping Nutrient Profiling Price Change Nutrient Profiling and Price Change
Affected / at Risk (%) Affected / at Risk (%) Affected / at Risk (%) Affected / at Risk (%)
Total   0/196 (0.00%)   0/198 (0.00%)   0/197 (0.00%)   0/197 (0.00%) 
Hide Other (Not Including Serious) Adverse Events
Frequency Threshold for Reporting Other Adverse Events 0%
Usual Shopping Nutrient Profiling Price Change Nutrient Profiling and Price Change
Affected / at Risk (%) Affected / at Risk (%) Affected / at Risk (%) Affected / at Risk (%)
Total   0/196 (0.00%)   0/198 (0.00%)   0/197 (0.00%)   0/197 (0.00%) 
Certain Agreements
Principal Investigators are NOT employed by the organization sponsoring the study.
There is NOT an agreement between Principal Investigators and the Sponsor (or its agents) that restricts the PI's rights to discuss or publish trial results after the trial is completed.
Results Point of Contact
Layout table for Results Point of Contact information
Name/Title: Leonard H. Epstein
Organization: SUNYBuffalo
Phone: 716-829-3400
EMail: lhenet@buffalo.edu
Layout table for additonal information
Responsible Party: State University of New York at Buffalo
ClinicalTrials.gov Identifier: NCT02376530    
Other Study ID Numbers: 1101757-1-60725
First Submitted: July 18, 2014
First Posted: March 3, 2015
Results First Submitted: April 27, 2016
Results First Posted: March 6, 2017
Last Update Posted: March 6, 2017