The GDD 2015 Beta-Version

Overview

Draft estimates are currently available for a set of dietary factors in GDD 2015. These data and estimates are preliminary and will be refined, updated, and appended on a rolling basis through August 2020. This will include work to finalize our input data, covariate data, and statistical prediction model to ensure our estimates are as accurate as possible. 

We welcome expert opinions from all of our data users. If you have any questions or comments on the data or intake patterns upon download, we invite you to contact us here

Data are intended for exploratory purposes only. Data are not intended for publication purposes at this time. All data are property of Tufts University.

Currently Available Dietary Factors

  • Fruits
  • Non-starchy vegetables
  • Beans and legumes
  • Nuts and seeds
  • Unprocessed red meats
  • Sugar-sweetened beverages
  • Fruit juices
  • Total milk
  • Total protein
  • Calcium
  • Potassium

Estimates for the remaining dietary factors will be finalized and made publicly available on a rolling basis through August 2020.

Available Population Characteristics

GDD 2015 estimates dietary intake for the global population by the following characteristics.

Year

1990, 1995, 2000, 2005, 2010, 2015. Data for intervening years will be made available on a rolling basis through August 2020.

Country

185 countries, listed here

Age

0-4, 5-9, 10-14, 15-19, 20-24, 25-29, 30-34, 35-39, 40-44, 45-49, 50-54, 55-59, 60-64, 65-69, 70-74, 75-79, 80-84, 85-89, 90-94, 95+

Sex

Male and female

Residence

Urban and rural (as defined by each survey's characteristics)

Education Level

Low (0-6 years formal education), medium (6.01-12.0 years), and high (12.01+ years)

GDD 2015 Improvements

Compared to GDD 2010, GDD 2015 now:

  • Contains close to 1,500 survey-years of individual-level dietary intake data, considerably increasing our catalog of inputs
  • Contains data for all ages, including infants, children, and youth
  • Estimates intake stratified by education (in 3 levels) and urban versus rural residence
  • Contains data for 55 dietary factors
  • Utilizes dietary intake data through the year 2015
  • Estimates intake for close to 98% of the world's population, compared to 82% in the previous iteration

 

How We Develop These Estimates

There are multiple steps involved in developing our dietary intake estimates:

  • Systematic searches of literature to identify public and private data sources
  • Collection of individual-level dietary data
  • Harmonization and standardization of data
  • Incorporating covariate data
  • Modeling individual-level dietary intake

Additional information can be found here. Detailed methodology about the above steps is coming soon.