National Agricultural Survey 2008 - Rwanda

Abstract
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The agricultural sector employs nearly 80% of the working population and is characterized by low productivity and low economic value. Almost 90% of households in Rwanda practice a traditional subsistence agriculture which is mainly carried on narrow plots of land and exhausted by a continuous utilization. The National Agricultural Survey 2008 (NAS 2008) was designed to provide a picture with reliable and updated agriculture sector figures, in order to serve as a baseline based on the facts and to set up development strategies that are most appropriate for the rural sector.

Geographic coverage
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The survey covers all rural areas of the country and some areas of Kigali city concerned by the agropastoral activities. The survey was conducted during the two agricultural seasons 2008A and 2008B which cover virtually the entire agricultural year. The same sample of households was visited during each growing season.

Analysis unit
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The unit of analysis was the holding of the agricultural household

Kind of data
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Sample survey data [ssd]

Sampling procedure
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The survey covers all rural areas of the country and some areas of Kigali city concerned by the agropastoral activities. The survey was conducted during the two agricultural seasons 2008A and 2008B which cover virtually the entire agricultural year. The same sample of households was visited during each growing season.

The data for developing the sampling plan of the National Agricultural Survey 2008 come from the RGPH 2002 mapping and census results. The agricultural module that was administered to all households helped to identify agricultural households. Information extracted from this module was used to develop a sample frame for the National Agricultural Survey. To select the primary sampling units (PSU), the number of agricultural households identified in RPGH 2002 was used as a measure of the size of the enumeration area (EA). For detailed information on the sampling process, refer to the survey report provided as an external resource.

Mode of data collection
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Face-to-face [f2f]

Cleaning operations
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For data entry operations, a computer program was developed using a CSPro statistical software application with a questionnaire on each sheet. A training session was organized on this data entry program and on the nature and extent of work to do. In total, this operation mobilized 184 data entry clerks, 10 controllers, 3 checkers, 3 supervisors of coding and 92 computers. Data entry was done in two steps:

- Data entry of the 2008A season (from June to July 2008): The preparation of this step consisted of checking completed forms and returning to site in case of improperly completed sheets, for correction. From 23/06/08 to 12/07/08, three field supervisors skilled in surveys conducted a mission at the headquarters of the NISR in order to help in organizing, supervising and coaching data entry clerks. They played the role of controllers and checkers of coding during the data entry period.

- Data entry of the 2008B season (from September to November 2008): As it was not possible to return to field records improperly completed during the 2008B season at the end of the field work, special instruction was given to field workers to undertake collectively a verification and correction of errors in questionnaires before delivering them to the headquarters of NISR. This instruction was observed by all fieldworkers. Subsequently, the data entry was done with the support of the same controllers and checkers of coding.

摘要
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农业部门吸纳了近80%的劳动力，其特征为低生产率和低经济价值。几乎90%的卢旺达家庭从事传统的自给自足农业，这种农业主要在狭窄的土地上进行，并因持续的利用而趋于衰竭。2008年国家农业调查（NAS 2008）旨在提供一幅可靠且更新的农业部门图景，以便作为基于事实的基线，并制定最适宜于农村部门的发展战略。
地理覆盖范围
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该调查覆盖了全国所有农村地区以及一些涉及农业游牧活动的基加利市区。调查在2008A和2008B两个农业季节进行，这两个季节几乎涵盖了整个农业年度。在每个生长季节，都访问了相同的家庭样本。
分析单位
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分析单位为农业家庭持有地。
数据类型
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样本调查数据 [ssd]
抽样程序
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该调查覆盖了全国所有农村地区以及一些涉及农业游牧活动的基加利市区。调查在2008A和2008B两个农业季节进行，这两个季节几乎涵盖了整个农业年度。在每个生长季节，都访问了相同的家庭样本。为制定2008年国家农业调查的抽样计划，数据来源于2002年人口和住房普查（RGPH 2002）的制图和普查结果。对所有家庭进行的农业模块有助于识别农业家庭。从该模块提取的信息被用于制定国家农业调查的样本框架。为了选择一级抽样单位（PSU），使用在2002年RGPH中确定的农业家庭数量作为统计调查区域（EA）大小的衡量标准。有关抽样过程的详细信息，请参阅提供的调查报告作为外部资源。
数据收集方式
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面对面 [f2f]
数据清理操作
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为数据录入操作，开发了使用CSPro统计软件应用程序的计算机程序，每个表格上都有一个问卷。组织了一次关于该数据录入程序以及工作性质和范围的培训。总共动员了184名数据录入员、10名控制器、3名核查员、3名编码监督员和92台计算机。数据录入分为两个步骤：
- 2008A季节的数据录入（从2008年6月至7月）：这一步骤的准备包括检查完成表格，并在表格填写不当时返回现场进行更正。从2008年6月23日至7月12日，三名熟练进行调查的现场监督员在NISR总部进行任务，以帮助组织、监督和指导数据录入员。他们在数据录入期间扮演了控制器和编码核查员的角色。
- 2008B季节的数据录入（从2008年9月至11月）：由于在2008B季节的现场工作结束时无法返回现场对填写不正确的记录进行更正，因此对现场工作人员进行了特别指示，要求他们在将问卷提交到NISR总部之前，集体进行验证和纠正问卷中的错误。所有现场工作人员都遵守了这一指示。随后，在相同的控制器和编码核查员的协助下进行了数据录入。