Subscribe

Back

Who we are

With research staff from more than 60 countries, and offices across the globe, IFPRI provides research-based policy solutions to sustainably reduce poverty and end hunger and malnutrition in developing countries.

researcher spotlight

Liangzhi You

Liangzhi You is a Senior Research Fellow and theme leader in the Foresight and Policy Modeling Unit, based in Washington, DC. His research focuses on climate resilience, spatial data and analytics, agroecosystems, and agricultural science policy. Gridded crop production data of the world (SPAM) and the agricultural technology evaluation model (DREAM) are among his research contributions. 

Where we work

Back

Where we work

IFPRI currently has more than 600 employees working in over 80 countries with a wide range of local, national, and international partners.

IFPRI Regional Programs

IFPRI Country Programs

Research by country and region

Subscribe

partnerships

Enabel, the development agency of Belgium’s federal government, is tasked with managing development projects for the Belgium Government and other donors. Enabel has three principal objectives: intensify the impact of the Belgian Development Cooperation, advance networks and public partnerships, and expand its own expertise and innovation. Enable is dedicated to helping achieve sustainable development throughout the world.

Homepage Link
donor-belgium

Projects

Value Chains Knowledge Portal

Value Chains Knowledge Portal

The Value Chains knowledge portal (tools4valuechains.org) is a repository of tools and methods, publications, training content, and information about events related to value chain research……

Publications

Resource thumbnail

Journal Article

Trade, value chain technology and prices: Evidence from dairy in East Africa

2022Ignowski, Liz; Minten, Bart; Van Campenhout, Bjorn; Vandevelde, Senne
Details

Trade, value chain technology and prices: Evidence from dairy in East Africa

Differences in world market participation and access to value chain technologies have resulted in uneven experiences across countries. In this paper, we explore their impact on prices in the value chain, using the example of Ethiopia and Uganda. We develop a conceptual framework, then validate the model using primary price data collected at several levels in the dairy value chains in both countries. We find that prices are lower in Uganda than Ethiopia, reflecting their respective net trade status. Moreover, despite shorter value chains, we find much more significant effects of distances from the capital on milk prices in Ethiopia than in Uganda. This is linked to the presence of milk chilling centers in Uganda. While such technology is important for milk quality, we find here that they also have the added benefit to reduce the impact of farmer’s remoteness on prices and allow for more geographically extended value chains.

Year published

2022

Authors

Ignowski, Liz; Minten, Bart; Van Campenhout, Bjorn; Vandevelde, Senne

Citation

Ignowski, Liz; Minten, Bart; Van Campenhout, Bjorn; and Vandevelde, Senne. 2022. Trade, value chain technology and prices: Evidence from dairy in East Africa. Q Open: A Journal of Agricultural, Climate, Environmental, Food, Resource and Rural Development Economics 2(2): qoac016. https://doi.org/10.1093/qopen/qoac016

Country/Region

Ethiopia; Uganda

Keywords

Eastern Africa; Sub-saharan Africa; Africa; Value Chains; Dairy Farming; Technology; Modelling; Agricultural Prices; Dairying; Trade; Prices

Language

English

Access/Licence

Open AccessCC-BY-4.0

Links

https://doi.org/10.1093/qopen/qoac016 Source record

Project

Policies, Institutions, and Markets

Record type

Journal Article

Resource thumbnail

Journal Article

Validity and reproducibility of a food frequency questionnaire for dietary factors related to colorectal cancer

2017Tollosa, Daniel Nigusse; Van Camp, John; Huybrechts, Inge; Huybregts, Lieven; Van Loco, Joris
Details

Validity and reproducibility of a food frequency questionnaire for dietary factors related to colorectal cancer

Dietary factors play a major role in the development of colorectal cancer. This study evaluated the reproducibility and validity of a 109-food item Food Frequency Questionnaire (FFQ) to measure the consumption of foods and nutrients related to the development of colorectal cancer in a population aged ≥50 years in Flanders, Belgium. A semi-quantitative FFQ was administered two times in a period of two weeks to evaluate reproducibility (FFQ1 and FFQ2). The validity of the FFQ was assessed by comparing FFQ1 against the 3-day diary method (3 DD). A total of 162 respondents (mean age 57.5 years) provided data for the FFQ, of whom 156 also participated in the validity assessment. Mean differences in the intake of foods and nutrients between FFQ1 and FFQ2 were, overall, small and statistically insignificant. However, a higher estimation was observed by FFQ1 as compared to the 3-DD method for the majority of food groups and nutrient intake in the validity assessment. A systematic mean difference (g/day) was observed for eight food groups in the Bland–Altman agreement test; the largest was for fruit intake. Regarding the nutrients, a systematic mean difference was observed in calcium, fat, and vitamin D intake. Overall, the reproducibility of the FFQ was good, and its validity could be satisfactory for estimating absolute food and nutrient intakes and ranking individuals according to high and low intake categories.

Year published

2017

Authors

Tollosa, Daniel Nigusse; Van Camp, John; Huybrechts, Inge; Huybregts, Lieven; Van Loco, Joris

Citation

Tollosa, Daniel Nigusse; Van Camp, John; Huybrechts, Inge; Huybregts, Lieven; and Van Loco, Joris; et al. 2017. Validity and reproducibility of a food frequency questionnaire for dietary factors related to colorectal cancer. Nutrients 9(11): 1257. https://doi.org/10.3390/nu9111257

Country/Region

Belgium

Keywords

Europe; Western Europe; Reproducibility; Nutrient Intake; Questionnaires; Evaluation; Intestinal Diseases; Food Intake

Language

English

Access/Licence

Open AccessCC-BY-4.0

Links

https://doi.org/10.3390/nu9111257 Source record

Project

Agriculture for Nutrition and Health

Record type

Journal Article