We set a quota of 100-150 shoppers in every category in each banner covered in the program. So the actual number of responses will vary by the number of retailers in the study each year, but you can be assured SI gives you a truly deep and rich analysis. Our sample is built to provide a robust perspective for each category with a high degree of statistical confidence. Colour codes applied will show you if you are given 90% or 99% confidence in any specific comparison. In most cases we are able to assess brands that have at least a 5-10% share of a category, and see differences by key product segments and shopper types. Clients can ask for a increased sample to improve the depth of analysis that can be done (it’s very cost effective to do so, particularly in larger categories or segments).