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Assessing the Retail Food Environment in Madrid: An Evaluation of Administrative Data against Ground Truthing

Previous studies have suggested that European settings face unique food environment issues; however, retail food environments (RFE) outside Anglo-Saxon contexts remain understudied. We assessed the completeness and accuracy of an administrative dataset against ground truthing, using the example of M...

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Autores principales: Díez, Julia, Cebrecos, Alba, Galán, Iñaki, Pérez-Freixo, Hugo, Franco, Manuel, Bilal, Usama
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6801710/
https://www.ncbi.nlm.nih.gov/pubmed/31546670
http://dx.doi.org/10.3390/ijerph16193538
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author Díez, Julia
Cebrecos, Alba
Galán, Iñaki
Pérez-Freixo, Hugo
Franco, Manuel
Bilal, Usama
author_facet Díez, Julia
Cebrecos, Alba
Galán, Iñaki
Pérez-Freixo, Hugo
Franco, Manuel
Bilal, Usama
author_sort Díez, Julia
collection PubMed
description Previous studies have suggested that European settings face unique food environment issues; however, retail food environments (RFE) outside Anglo-Saxon contexts remain understudied. We assessed the completeness and accuracy of an administrative dataset against ground truthing, using the example of Madrid (Spain). Further, we tested whether its completeness differed by its area-level socioeconomic status (SES) and population density. First, we collected data on the RFE through the ground truthing of 42 census tracts. Second, we retrieved data on the RFE from an administrative dataset covering the entire city (n = 2412 census tracts), and matched outlets using location matching and location/name matching. Third, we validated the administrative dataset against the gold standard of ground truthing. Using location matching, the administrative dataset had a high sensitivity (0.95; [95% CI = 0.89, 0.98]) and positive predictive values (PPV) (0.79; [95% CI = 0.70, 0.85]), while these values were substantially lower using location/name matching (0.55 and 0.45, respectively). Accuracy was slightly higher using location/name matching (k = 0.71 vs 0.62). We found some evidence for systematic differences in PPV by area-level SES using location matching, and in both sensitivity and PPV by population density using location/name matching. Administrative datasets may offer a reliable and cost-effective source to measure retail food access; however, their accuracy needs to be evaluated before using them for research purposes.
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spelling pubmed-68017102019-10-31 Assessing the Retail Food Environment in Madrid: An Evaluation of Administrative Data against Ground Truthing Díez, Julia Cebrecos, Alba Galán, Iñaki Pérez-Freixo, Hugo Franco, Manuel Bilal, Usama Int J Environ Res Public Health Article Previous studies have suggested that European settings face unique food environment issues; however, retail food environments (RFE) outside Anglo-Saxon contexts remain understudied. We assessed the completeness and accuracy of an administrative dataset against ground truthing, using the example of Madrid (Spain). Further, we tested whether its completeness differed by its area-level socioeconomic status (SES) and population density. First, we collected data on the RFE through the ground truthing of 42 census tracts. Second, we retrieved data on the RFE from an administrative dataset covering the entire city (n = 2412 census tracts), and matched outlets using location matching and location/name matching. Third, we validated the administrative dataset against the gold standard of ground truthing. Using location matching, the administrative dataset had a high sensitivity (0.95; [95% CI = 0.89, 0.98]) and positive predictive values (PPV) (0.79; [95% CI = 0.70, 0.85]), while these values were substantially lower using location/name matching (0.55 and 0.45, respectively). Accuracy was slightly higher using location/name matching (k = 0.71 vs 0.62). We found some evidence for systematic differences in PPV by area-level SES using location matching, and in both sensitivity and PPV by population density using location/name matching. Administrative datasets may offer a reliable and cost-effective source to measure retail food access; however, their accuracy needs to be evaluated before using them for research purposes. MDPI 2019-09-21 2019-10 /pmc/articles/PMC6801710/ /pubmed/31546670 http://dx.doi.org/10.3390/ijerph16193538 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Díez, Julia
Cebrecos, Alba
Galán, Iñaki
Pérez-Freixo, Hugo
Franco, Manuel
Bilal, Usama
Assessing the Retail Food Environment in Madrid: An Evaluation of Administrative Data against Ground Truthing
title Assessing the Retail Food Environment in Madrid: An Evaluation of Administrative Data against Ground Truthing
title_full Assessing the Retail Food Environment in Madrid: An Evaluation of Administrative Data against Ground Truthing
title_fullStr Assessing the Retail Food Environment in Madrid: An Evaluation of Administrative Data against Ground Truthing
title_full_unstemmed Assessing the Retail Food Environment in Madrid: An Evaluation of Administrative Data against Ground Truthing
title_short Assessing the Retail Food Environment in Madrid: An Evaluation of Administrative Data against Ground Truthing
title_sort assessing the retail food environment in madrid: an evaluation of administrative data against ground truthing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6801710/
https://www.ncbi.nlm.nih.gov/pubmed/31546670
http://dx.doi.org/10.3390/ijerph16193538
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