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Table 1 Characteristics of the baseline 2006 and the MIS 3R surveys

From: Which nets are being used: factors associated with mosquito net use in Amhara, Oromia and Southern Nations, Nationalities and Peoples' Regions of Ethiopia

Characteristic Baseline 2006 MIS 3R 2007
Scope of the survey Surveys in Amhara, Oromia and SNNP regions only This is a sub-sample of the National MIS comprising 3 regions (Amhara, Oromia and SNNPR).
Dates of survey December 2006 to January 2007 October through December 2007
Sampling frame Sampling frame included only kebeles defined by the Regional Health Bureaus as malarious by expert knowledge. Nationally representative sample stratified by three domains: areas below 1,500 m, rural areas between 1,500 m and 2,500 m, and urban areas between 1,500 m and 2,500 m
Primary Sampling Unit Defined as kebeles (the smallest administrative unit with an average population of 5,000) selected with probability proportional to population size Defined as census enumeration areas (EA) with each cluster comprising an estimated population of 200 households.
Sampling of clusters 5 State-teams per kebele selected randomly from list of state-teams in the selected kebeles. EA selected randomly with probability proportional to population size of strata.
Sampling of households 5 households per state team using the random-walk method. Simple random sample of all households in EA selected after mapping all households using personal digital assistants (PDAs) with global positioning system (GPS) capability
Sample size 224 clusters of 25 households 245 clusters of 25 households