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Modified ground-truthing: an accurate and cost-effective food environment validation method for town and rural areas

Overview of attention for article published in International Journal of Behavioral Nutrition and Physical Activity, March 2016
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About this Attention Score

  • Good Attention Score compared to outputs of the same age (68th percentile)

Mentioned by

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5 tweeters
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1 Facebook page

Citations

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14 Dimensions

Readers on

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52 Mendeley
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Title
Modified ground-truthing: an accurate and cost-effective food environment validation method for town and rural areas
Published in
International Journal of Behavioral Nutrition and Physical Activity, March 2016
DOI 10.1186/s12966-016-0360-3
Pubmed ID
Authors

Caitlin Eicher Caspi, Robin Friebur

Abstract

A major concern in food environment research is the lack of accuracy in commercial business listings of food stores, which are convenient and commonly used. Accuracy concerns may be particularly pronounced in rural areas. Ground-truthing or on-site verification has been deemed the necessary standard to validate business listings, but researchers perceive this process to be costly and time-consuming. This study calculated the accuracy and cost of ground-truthing three town/rural areas in Minnesota, USA (an area of 564 miles, or 908 km), and simulated a modified validation process to increase efficiency without comprising accuracy. For traditional ground-truthing, all streets in the study area were driven, while the route and geographic coordinates of food stores were recorded. The process required 1510 miles (2430 km) of driving and 114 staff hours. The ground-truthed list of stores was compared with commercial business listings, which had an average positive predictive value (PPV) of 0.57 and sensitivity of 0.62 across the three sites. Using observations from the field, a modified process was proposed in which only the streets located within central commercial clusters (the 1/8 mile or 200 m buffer around any cluster of 2 stores) would be validated. Modified ground-truthing would have yielded an estimated PPV of 1.00 and sensitivity of 0.95, and would have resulted in a reduction in approximately 88 % of the mileage costs. We conclude that ground-truthing is necessary in town/rural settings. The modified ground-truthing process, with excellent accuracy at a fraction of the costs, suggests a new standard and warrants further evaluation.

Twitter Demographics

The data shown below were collected from the profiles of 5 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 52 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 1 2%
Unknown 51 98%

Demographic breakdown

Readers by professional status Count As %
Researcher 10 19%
Student > Ph. D. Student 9 17%
Student > Master 6 12%
Student > Bachelor 4 8%
Student > Postgraduate 3 6%
Other 9 17%
Unknown 11 21%
Readers by discipline Count As %
Medicine and Dentistry 10 19%
Social Sciences 8 15%
Nursing and Health Professions 6 12%
Agricultural and Biological Sciences 3 6%
Arts and Humanities 1 2%
Other 7 13%
Unknown 17 33%

Attention Score in Context

This research output has an Altmetric Attention Score of 4. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 13 November 2017.
All research outputs
#3,304,148
of 12,134,677 outputs
Outputs from International Journal of Behavioral Nutrition and Physical Activity
#939
of 1,255 outputs
Outputs of similar age
#89,757
of 289,630 outputs
Outputs of similar age from International Journal of Behavioral Nutrition and Physical Activity
#39
of 41 outputs
Altmetric has tracked 12,134,677 research outputs across all sources so far. This one has received more attention than most of these and is in the 72nd percentile.
So far Altmetric has tracked 1,255 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 20.6. This one is in the 25th percentile – i.e., 25% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 289,630 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 68% of its contemporaries.
We're also able to compare this research output to 41 others from the same source and published within six weeks on either side of this one. This one is in the 4th percentile – i.e., 4% of its contemporaries scored the same or lower than it.