Burkina Faso - Enquête ménage sur la migration et les transferts de fonds (2010)
ID de référence | BFA-UO-BM-EMTF-2010 |
Année | 2010 |
Pays | Burkina Faso |
Producteur(s) | Université de Ouagadougou |
Bailleur(s) | Banque Africaine de développement - BAD - Appui financier Agence Canadienne pour le développement international - ACDI - Appui financier Agence Suédoise pour le développement international - - Appui financier Ministère Français de l' |
Collection(s) |
Créé le
Sep 13, 2017
Dernière modification
Sep 13, 2017
Affichage par page
111919
- Documentation
- Description de l'enquête
- Dictionnaire de données
- Charger les microdonnées
- Bibliographie
Echantillonnage
Méthode d'échantillonnage
L'enquête n'a porté que sur les 10 provinces (sur 45) connaissant la migration la plus intense selon les résultats du recensement de 2006. Dans cet univers, on a procédé à un sondage à deux degrés. Au premier degré, les unités de sondage étaient les villages et secteurs de centres urbains, parmi lesquels on en a tiré au sort (sondage équiprobable) 78 (sur 2.273). On a ensuite (second degré) sélectionné 27 ménages par village/secteur de centre urbain, soit au total 2.106 ménages. Après un recensement rapide des ménages de chaque village/secteur de centre urbain, la sélection de ces 27 ménages s'est faite selon la règle suivante : 9 ménages avec des migrants internationaux, 9 ménages avec des migrants internes et 9 ménages sans migrants.
(Source: Ireda, Francis Gendreau)
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The sampling approach was chosen to focus on international migration and remittances. It has ensured an adequate representation of migration density in Burkina Faso. First we used the Burkina Faso Census 2006 that includes questions on demographic and migration. Then we calculated the incidence of international migration for each of the 45 provinces in Burkina Faso. We chose the largest 10 provinces which have the highest international migration incidence. The universe for this survey is the households that are placed in these provinces. After chosen the universe of households, we have adopted a two stages sampling: i) village/town sector and ii) household. Migration scope is different depending on the province or rural/urban area in Burkina Faso. We determine the number of village to be selected in each province according to the international migration incidence of each province. In total we selected 78 villages out of 2,273 villages for the 10 provinces.
Village town sector selection
The first stage of sampling consisted of villages and towns selection. We randomly selected the village/town sector within each province with equal probability. We have considered a village/town sector sample size of 27 households. We distributed the 27 households according to the following rule: 9 households with international migrants, 9 households with internal migrants and 9 households with no migrants. Thus, the whole sample is composed of 78 villages/towns sectors for 2,106 households. Considering migration density in each province, a number of villages/town sectors were randomly selected by province. In big town as Ouagadougou, each sector was considered as a village.
Household selection
The second sampling stage was household selection. Households were randomly selected after doing an exhaustive and quick household census in the selected village. For the villages in rural areas, we listed all the households in the village. The listing survey was not done for all households in town: we have randomly selected about 120 households in each selected town sector around a random start point. This number is extended if needed in order to attend the household type quotas. We have determined this point by using the town addressing codes. The process consisted of selecting randomly a street code and an avenue code which constituted the two elements of the start point. The main objective of the census is the household sampling. It provides information on the head household name, household size and household category (households without migrants, households with internal migrants and households with international migrants). The sub sample size for each household category is 9 in selected village/town sector. These households are randomly selected among the total households of the category from the quick census.
Taux de réponse
Most of the questionnaires (99%) have been completed at the first visit. The non response rate is very low: 4 households out of 2106 have not responded. This score could be explained by the census process during which the high experienced team prepared the household for interview if it coma to be selected.
Pondération
Following the sampling frame, weights are calculated at three levels: province, village and household. The province is weighted considering its population and the total population of the survey area (10 provinces). The village is weighted in the same way, according to its population, the total population of the corresponding province and the total population of the 10 provinces of the survey area. As households have been selected in three categories (households with no migrant, households with internal migrant and households with international migrant), the weight of each household is calculated taking into account the number of households in its category. It also includes the weights of its village and province. For any level, the weight is the inverse of the level unit selection probability. Further calculation details are in the STATA do-file programs while weights are in the database from the survey.
We have adopted a probabilistic two stage sampling method. It is necessary to correct the inequality in probability for the observed unit (household) to be selected in the survey universe. The standard correction method consists of weighting the statistic outcomes.