Refugees from Sudan started arriving in eastern Chad in 2003 due to the conflict in Darfur. The number of long-term refugees was estimated to be 310,834 people in 2016. The region is mostly desert with few natural resources, in particular land and water. On top of the difficult environment, insecurity has made it a challenge for NGOs and international organizations to provide support to the camps. The refugees in the camps have relied on WFP food assistance since they arrived. In January 2014, the food ration was reduced from the standard 2,100 kcal/day to 800 kcal.
As part of nutrition and health monitoring, UNHCR in collaboration with WFP organized a Standardized Expanded Nutrition Survey (SENS) in the camps in order to assess the nutrition and health situation of the refugee populations, and orient and guide decision-making for the following year. The survey took place from 7 December 2016 to 22 January 2017 in the 12 camps hosting refugees from Sudan in the regions of Ouaddai, Wadi Fira, Ennedi East and Sila (situated on the border with Darfur, Sudan). The survey include two modules (children under 5 and women of child-bearing age) and used two-stage cluster sampling. See more details in the report.
Kind of Data
Sample survey data [ssd]
Unit of Analysis
Household and individual
v2.1: Edited, cleaned and anonymised data.
The scope includes:
- nutritional status of infants and children under 5
- women aged 15 to 49 years
Health and Nutrition
Ouaddai, Wadi Fira, Ennedi East and Sila
all refugee households living in the camp
Producers and sponsors
Two-stage cluster sampling
Raw survey weights are included in the dataset (see survey_weight), and were calculated by diving the total number of households/individuals in the sample frame by the size of the sample for each module. Weights were calculated separately for each camp.
Dates of Data Collection
Data Collection Mode
UNHCR Global Data Service Statistics and Demographics Section