Agricultural Sample Survey 2004-2005 (1997 E.C)
Ethiopia, 2004 - 2005
Identification
ETH_2004_AgSS_v01_M
Agricultural Sample Survey 2004-2005 (1997 E.C)
| Name | Country code |
|---|---|
| Ethiopia | ETH |
Agricultural Survey [ag/oth]
Agriculture is core to the sustenance of food security, supply of raw materials and manufacturing industries especially agro-industries and it is a major source of export items in the country. This indicates that agriculture plays a vital role in the Ethiopian situation where millions of people are frequently haunted by drought and famine. The provision of adequate food to the needy people in Ethiopia exclusively depends on development of agriculture. Efforts are being intensified to bring about a perceptible change in the development of the agricultural sector to ensure a steady and adequate supply of food to those who need it. To bridge the gap between the demand for food and food supply, and to guarantee the availability of food and attain the desired change in the lives of the farming population, the government has embarked upon a transformation of the existing agricultural practices in the country. The progress anticipated from this task has to be appraised, monitored and evaluated with agricultural development statistical information as an input to find out whether the desired changes have materialized. To this end, the Central Statistical Authority (CSA) has been generating statistical information on the country's agriculture for the past twenty-four years. As part of this undertaking the 2004/05 (1997 E.C) Agricultural Sample Survey was conducted to furnish data on crop area and production of crops within the private peasant holdings for “Meher” Season of the cited year.
The general objective of CSA's Agricultural Sample Survey (AgSS) is to collect basic quantitative information on the country's agriculture that is essential for planning, policy formulation, monitoring and evaluation of mainly food security and other agricultural activities. The AgSS is composed of four components: Crop Production Forecast Survey, Meher Season Survey, Livestock Survey and Belg Season Survey.
The specific objectives of Main (“Meher”) Season Survey are:
-To estimate the total cultivated area, production and yield of crops and provide estimates of land use area and quantity of agricultural inputs for Main (“Meher”) Season.
-To estimate the total volume of inputs used, inputs applied area and number of holders using inputs.
-To estimate the total cultivated area and other forms of land use.
Sample survey data [ssd]
Agricultural household/ Holder/ Crop
Version
Version 1.1: Edited and non anonymized dataset, for internal use only.
Scope
The scope of annual Agricultural Sample Survey includes:
- Area identification and characteristics of agricultural holder's. This included household's geographic locations, holder's age, holder's sex and educational status.
- List of fields and agricultural practices for pure stand and mixed crops.
- List of permanent crops and number of tress.
- Records of quantity of improved seed, fertilizers and information on crop protection.
- Records of results of area measurements.
- List and selection of fields for crop cutting and details of record of crop cutting.
Coverage
The 2004-2005 annual Agricultural Sample Survey covered the entire rural parts of the country except all zones of Gambella region, and the non-sedentary population of three zones of Afar and six zones of Somali regions.
Agricultural households
Producers and sponsors
| Name | Affiliation |
|---|---|
| Central Statistical Authority | Ministry of Finance and Economic Development |
| Name |
|---|
| Government of Ethiopia |
Sampling
Sampling Frame:
The list containing EAs of all regions and their respective agricultural households obtained from the 2001/02 Ethiopian Agricultural Sample Enumeration (EASE) was used as the sampling frame in order to select the primary sampling units (EAs). Consequently, all sample EAs were selected from this frame based on the design proposed for the survey. Sample Design A stratified two-stage cluster sample design was used to select the sample. Enumeration Areas (EAs) were taken to be the primary sampling units (PSUs) and the secondary sampling units (SSUs) were agricultural households. Sample enumeration areas from each stratum were sub-samples of the 2001/02 (1994 E.C) Ethiopian Agricultural Sample Enumeration. They were selected using probability proportional to size systematic sampling; size being number of agricultural households obtained from the 1994 Population & Housing Census and adjusted for the sub-sampling effect. Within each sample EA a fresh list of households was prepared and 25 agricultural households from each sample EA were systematically selected at the second stage. The survey questionnaire was finally administered to the 25 agricultural households selected at the second stage. Information on area under crops and Meher season production of crops was obtained from the 25 households that were ultimately selected. It is important to note, however, that data on crop cutting were obtained only from fifteen sampled households.
The sample size for the 2004-2005 agricultural sample survey was determined by taking into account both the required level of precision for the most important estimates within each domain and the amount of resources allocated to the survey. In order to reduce non sampling errors, manageability of the survey in terms of quality and operational capability was also considered. Except Harari, Addis Ababa and Dire Dawa, where each region as a whole was taken to be the domain of estimation; each zone of a region / special wereda was adopted as a stratum for which major findings of the survey are reported. Distribution of sampling units (planned and covered EAs) by stratum is presented in Appendix III of 2004-2005 Agricultural Sample Survey, volume I report which is provided as external resource.
Initially, a total of 2,016 Enumeration Areas (EAs) were selected to be covered by the survey, however, due to various reasons that are beyond the control of the CSA two EAs were not covered and 2,014 EAs (99.90 %) were actually covered. As regards the ultimate sampling unit, it was planned to conduct the survey on 50,400 agricultural households but 50,287 (99.78 %) households were in fact covered by the Meher season agricultural sample survey.
The sampling procedure consists of two stages: hence the weighting formula takes into account both stages, i.e selection of the primary sampling unit (EAs) and the secondary sampling unit (Households). For more detailed mathmatical description of the estimation procedure, please refer the document containing the final report.
Survey instrument
The 2004-2005 annual Agricultural Sample Survey used structured questionnaires to collect agricultural information from selected sample agricultural households.
List of forms in the questionnaires:
- AgSS Form 97/0: Used to list all households and agricultural holders in the sample enumeration areas.
- AgSS Form 97/1: Used to list selected households and agricultural holders in the sample enumeration areas.
- AgSS Form 97/3A: Used to list fields under temporary crops, collect information about farm management practices and area measurement.
- AgSS Form 97/3B: Used to list fields under permanent crops, collect information about farm management practices and area measurement.
- AgSS Form 97/3C: Used to list fields under mixed crops, collect information about farm management practices and area measurement.
- AgSS Form 97/3D: Used to list non-crop field and area measurement.
- AgSS Form 97/4: Used to list temporary crop fields for selection of crop cutting plots.
- AgSS Form 97/5: Used to collect information about temporary crop cutting results.
Note: The questionnaires are presented in the Appendix III of the 2004-2005 Agricultural Sample Survey report.
Data collection
| Start | End |
|---|---|
| 2004-09 | 2005-02 |
| Name | Affiliation |
|---|---|
| Central Statistical Authority of Ethiopia | Ministry of Finance and Economic Development |
Organization of field work:
To successfully conduct the survey a well executed fieldwork arrangement was necessary. In recognition of this, the organization of fieldwork has been entrusted to the Department of Field Operations that liaises between the Head Office and the 25 Branch Statistical Offices spread across the regions. All Branch Offices took part in the survey execution especially in recruiting the enumerators, organizing the 2nd stage training, assigning the field staff to their sites of enumeration, supervising the data collection and retrieving completed questionnaires and submitting them to the Head Office for data processing. The Branch Offices were also responsible in administering the financial and logistic aspects of the survey within their areas of operation. A total of 2176 enumerators, 414 field supervisors, 24 coordinators and 91 statisticians were involved in the data collection where on the average one supervisor was assigned to five enumeration areas for supervision of data collection. All the enumerators were supplied with the necessary survey equipment after the completion of the training to ensure the smooth operation of the survey. To facilitate the data collection activities, a total of 205 four-wheel drive vehicles were used.
Training of field staff:
The execution of a survey and quality of data acquired from the survey highly depend on the type of training given to the enumerators and supervisors and the consequent understanding of the tasks to be performed and the standard procedures to be followed by the enumerators and supervisors in the survey undertaking. The quality and completeness of data is ensured when the training meets its objective of producing responsible and fervent enumerators and supervisors. In light of this point, the training was given to the field staff in two stages. The first stage training, which took place at the Head Quarters of CSA and lasted 10 days targeted staff from the Head Office, and senior field supervisors from Branch Statistical Offices. The staff that took part in the first stage training was then assigned to conduct similar training for the enumerators and other supervisors for fifteen days in all the twenty- five Branch Statistical Offices distributed across the country. In the training the field staff was given detailed classroom instruction on how to collect data, method of area measurement, method of crop cutting, interviewing procedures, etc. The training also included field practice to reinforce the understanding of concepts, definitions and theories discussed in the classroom with regard to field measurement, crop cutting and interviewing methods.
Method of data collection:
The agricultural data for the year 2004/05 (1997 E.C) was collected from sedentary rural peasant households by interviewing the selected agricultural holders and physically measuring their fields and performing crop cutting procedures to gather data on crop yields and other items of interest. The data obtained were recorded in various forms designed for this purpose. Instruments like measuring tape; compass, kitchen balance, scientific calculators and others were used during data collection for a timely and smooth acquisition of accurate data. The procedures for measuring area under crop and area of non - crop fields operated by the holders were performed for the 25 selected households from each sampled E.A. using measuring tapes and compasses. All fields under major temporary crops of each holder of the fifteen randomly selected households of the 25 sample households were classified by crop type and a crop field was randomly selected from each crop type for crop cutting to be performed. The crop cutting procedure consists of demarcation of a four meter by four meter plot randomly located in the selected field where the crop in the demarcated plot is to be harvested. Following the enumerator's harvest of the crop demarcated and threshing, the crop is kept in bags with identification information (i.e. holder's number, parcel and field numbers). The crop stored in the bag is weighed immediately (green weight) after threshing and weighed again after two weeks of drying to simulate normal holder harvesting and drying practices. Both the green and dry weights are recorded on the respective forms.
Data processing
Editing, Coding and Verification:
Statistical data editing plays an important role in ensuring the quality of the collected survey data. It minimizes the effects of errors introduced while collecting data in the field, hence the need for data editing, coding and verification. Although coding and editing are done by the enumerators and supervisors in the field, respectively, verification of this task is done at the Head Office. An editing, coding and verification instruction manual was prepared and reproduced for this purpose. Then 44 editors-coders and verifiers were trained for two days in editing, coding and verification using the aforementioned manual as a reference and teaching aid. The completed questionnaires were edited, coded and later verified on a 100 % basis before the questionnaires were passed over to the data entry unit. The editing, coding and verification exercise of all questionnaires took 40 days.
Data Entry, Cleaning and Tabulation:
Before data entry, the Natural Resources and Agricultural Statistics Department prepared edit specification for the survey for use on personal computers for data consistency checking purposes. The data on the edited and coded questionnaires were then entered into personal computers. The data were then checked and cleaned using the edit specifications prepared earlier for this purpose. The data entry operation involved about 110 data encoders and it took 30 days to finish the job. Finally, summarization of the data was done on personal computers to produce statistical tables as per the tabulation plan.
Data appraisal
Estimation procedure of totals, ratios, sampling error and the measurement of precision of estimates (CV) are given in Appendix I and II of 2004-2005 Agricultural Sample Survey, Volume I report.
Data Access
| Name | Affiliation | URL | |
|---|---|---|---|
| Central Statistical Agency of Ethiopia | Ministry of Finance and Economic Development | http://www.csa.gov.et | csa@csa.gov.et |
The Central Statistical Agency (CSA) is committed to achieving excellence in the provision of timely, reliable and affordable official statistics for informed decision making in order to maximize the welfare of all Ethiopians. This is achieved through the collection and analysis of censuses, surveys and the use of administrative data as well as the dissemination a range of statistical products and providing assistance and services to users.
A microdata dissemination policy is established by CSA to address the conditions and the manner in which anonymized microdata files may be released to users for research purposes. It also strives to identify the different levels of anonymization for different categories of data use. This policy is available at CSA website (http://www.csa.gov.et).
CSA will release microdata files for use by researchers for scientific research purposes when:
The Director General is satisfied that all reasonable steps have been taken to prevent the identification of individual respondents.
The release of the data will substantially enhance the analytic value of the data that have been collected For all but purely public files, researchers disclose the nature and objectives of their intended research, It can be demonstrated that there are no credible alternative sources for these data, and
The researchers have signed an appropriate undertaking.
Terms and conditions of use of public data files are the following:
The data and other materials provided by CSA will not be redistributed or sold to other individuals, institutions, or organizations without the written agreement of CSA.
The data will be used for statistical and scientific research purposes only. They will be used solely for reporting of aggregated information, and not for investigation of specific individuals or organizations.
No attempt will be made to re-identify respondents, and no use will be made of the identity of any person or establishment discovered inadvertently. Any such discovery would immediately be reported to the CSA.
No attempt will be made to produce links among datasets provided by CSA, or among data from the CSA and other datasets that could identify individuals or organizations.
Any books, articles, conference papers, theses, dissertations, reports, or other publications that employ data obtained from CSA will cite the source of data in accordance with the Citation Requirement provided with each dataset.
An electronic copy of all reports and publications based on the requested data will be sent to CSA.
The original collector of the data, CSA, and the relevant funding agencies bear no responsibility for use of the data or for interpretations or inferences based upon such uses.
Cost Recovery Policy:
It is the policy of CSA to encourage broad use of its products by making them affordable for users. Accordingly, CSA attempts to ensure that the costs of creating anonymized microdata files are built-in to the survey budget.
At the same time, CSA attempts to recover costs associated with the provisions of special services that benefit only a specific group. Information on the price of each dataset is available at CSA website (http://www.csa.gov.et )
The following statement must be used as citation: "Central Statistical Authority of Ethiopia (CSA). Agricultural Sample Survey (AgSS 2004-2005)"
Disclaimer and copyrights
The user of the data acknowledges that the original collector of the data, the authorized distributor of the data, and the relevant funding agency bear no responsibility for use of the data or for interpretations or inferences based upon such uses.
Contacts
| Name | Affiliation | URL | |
|---|---|---|---|
| Data Administrator | Central Statistical Agency of Ethiopia | data@csa.gov.et | http://www.csa.gov.et |
Metadata production
DDI_ETH_2004_AgSS_v02_M
| Name | Affiliation | Role |
|---|---|---|
| Central Statistical Agency | Ministry of Finance and Economic Development | Production and documentation of the study |
| International Household Survey Network | Review of the metadata |
2005-07-26
Metadata version
Version 02: Adopted from "DDI-ETH-CSA-AgSS-2004-v1.1" DDI, which was done by Ethiopian Central Statistical Agency.