Product barcode details were used to match products between Nutritrack and Nielsen NZ Homescan®. For products that could not be matched in this way, the following four-step approach was used.

Fig. 1 illustrates 31,470 unique products, of which 23,020 (23,020/31,470 = 73.1%) products were eligible for inclusion after the first exclusion step. Following the second exclusion step, 89.0% of all eligible products (20,491/23,020 = 89.0%) were matched to food composition data and included in our analyses. In the second exclusion step, 11% (2525/23,020) were uncommon products, and 4 products were purchased from a retail brand only in one location for the one-year period; therefore, these products were excluded.

Flow diagram showing number of products included in the study.

Note: The content above has been extracted from a research article, so it may not display correctly.



Q&A
Please log in to submit your questions online.
Your question will be posted on the Bio-101 website. We will send your questions to the authors of this protocol and Bio-protocol community members who are experienced with this method. you will be informed using the email address associated with your Bio-protocol account.



We use cookies on this site to enhance your user experience. By using our website, you are agreeing to allow the storage of cookies on your computer.