Data quality control
To assure the quality of data, a three-day training was given for data
collectors on how to interview and collect data. A pretest was done on
5% of the questionnaire on Haramaya woreda. Close supervision of the
data collectors was made by the authors. Collected data was checked both
in the field and at the end of each day after data collection, before
data entry for completeness and missing values. Double data entry was
performed by two authors (AA and MY).