Title page
Contents
Abstract 3
Acknowledgments 3
Summary 5
Introduction 7
Existing Retail Food Price Data Sources 8
Alternative Price Databases 8
Quarterly Food-at-Home Price Database 10
Data Description 11
Circana OmniMarket Core Outlets Data 11
USDA, ERS Food Purchase Groups (EFPGs) 13
Geographic Markets 14
Price Calculations 15
Overview 15
Unit Value Calculations 16
Price Index Calculations 17
Discussion of F-MAP Data Dimensions 20
Across Price Measures 21
Across Food Groupings 23
Across Geographical Areas 25
Conclusion 29
References 30
Appendix A: ERS Food Purchase Groups (EFPGs) Descriptions 34
Grains 34
Vegetables 34
Fruit 36
Dairy and Plant-Based Milk Products 36
Meat and Protein Foods 37
Prepared Meals, Sides, and Salads 37
Other Foods 38
Appendix B: Share of Weighted and Unweighted National Sales by EFPG 54
Appendix C: Mapping of EFPGs to FoodAPS-1 groups 58
Appendix D: Rolling-Window Multilateral Price Indexes 64
Table 1. Federal retail food price datasets 9
Table 2. Summary table of code assignments for UPC-labeled and perishable products, 2016-18 14
Table 3. Guidance for selecting price indexes for use in analyses 18
Table 4. Monthly weighted mean unit value (dollars per 100 grams) for EFPGs for the Atlanta metropolitan area, 2018 24
Figure 1. Monthly weighted mean unit values and price indexes for cheese, Dallas metropolitan area, 2016-18 22
Figure 2. Monthly weighted mean unit values and price indexes for frozen poultry, Dallas metropolitan area, 2016-18 22
Figure 3. Monthly weighted mean unit values and price indexes for fresh tomatoes, New York metropolitan area, 2016-18 23
Figure 4. Monthly weighted mean unit values and Fisher Ideal price index for fresh dark green vegetables, by census region, 2016-18 25
Figure 5. Monthly weighted mean unit values and Fisher Ideal price index for whole grain breakfast cereal, by census region, 2016-18 27
Figure 6. Monthly weighted mean unit values and Törnqvist price index for whole milk, by metropolitan area, 2016-18 28
Table A.1. Number of product codes (UPC and perishable) assigned to each EFPG, 2018 40
Table B.1. Share of weighted and unweighted national sales by EFPG, 2018 54
Table C.1. Mapping of EFPG groups to FoodAPS-1 groups 58