Household Income and Expenditure Survey - 2009/10 - Sri Lanka

Abstract
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This survey provides information on household income and expenditure to be able to measure the levels and changes in the living condition of the people, to observe the consumption patterns and to compute various other indicators such as poverty, food ratio, gini co-efficient of income and expenditure etc.

Key objectives of the survey
- To identify the income patterns in Urban, Rural, Estate Sector and Districts.
- To identify the income patterns by income levels.
- Average consumption of food items and non food items
- Expenditure patterns by sector and by different income levels.
- To identify the incidence of poverty by sector and income levels

Geographic coverage
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National coverage.
For this survey a sample of buildings and the occupants therein was drawn from the whole island (covered all the districts excluding Mannar, Kilinochchi and Mullaithivu districts in the Northern province).

Analysis unit
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Household, Individuals

Kind of data
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Sample survey data [ssd]

Sampling procedure
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A two stage stratified random sample design was used in the survey. Urban, rural and estate sectors of the District are the domains for stratification. The sample frame is the list of buildings that were prepared for the Census of Population and Housing 2001.

Selection of Primary Sampling Units (PSU's)

Primary Sampling Units are the census blocks prepared for the Census of Population and Housing - 2001. The sample frame, which is a collection of all census blocks in the domain, was used for the selection of primary sampling units. A sample of 2500 primary sampling units was selected from the sampling frame for the survey.

Each selected block was updated to include newly built housing units and excluded demolished housing units, which are no longer in existence. This updating operation was also carried out over a period of 12 months, starting from June 2009 to May 2010. For each PSU, updating was done about one month prior to the scheduled interviewing.

Selection of Secondary Sampling Units (SSU's)

Secondary Sampling Units are the housing units in the selected 2500 primary sampling units (census blocks). From each primary sampling unit 10 housing units (SSU) were selected for the survey. The total sample size of 25000 housing units was selected and distributed among Districts in Sri Lanka.

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

摘要
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本调查旨在提供关于家庭收入和支出的信息，以便衡量人民生活水平的水平和变化，观察消费模式，并计算各种其他指标，例如贫困率、食物比率、收入和支出基尼系数等。

调查的关键目标
- 识别城市、农村、住宅区和各区的收入模式。
- 根据收入水平识别收入模式。
- 食品和非食品项目的平均消费量。
- 按部门和不同收入水平划分的支出模式。
- 识别按部门和收入水平划分的贫困发生率。

地理覆盖范围
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全国覆盖。
对于本次调查，从整个岛屿（覆盖所有地区，不包括北部省的曼纳、基洛内奇和穆拉利蒂维乌地区）中抽取了建筑及其居住者的样本。

分析单元
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家庭、个人

数据类型
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样本调查数据 [ssd]

抽样程序
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调查中采用了两阶段分层随机抽样设计。城市的、农村的和住宅区是该分层的领域。样本框是准备用于2001年人口和住房普查的建筑列表。

一级抽样单元（PSU）的选择

一级抽样单元是为2001年人口和住房普查准备的普查区块。样本框，即该领域内所有普查区块的集合，被用于选择一级抽样单元。从样本框中选择了2500个一级抽样单元用于调查。

每个选定的区块都进行了更新，包括新建的住宅单元，并排除了已拆除的住宅单元，这些单元已不再存在。此更新操作在2009年6月至2010年5月期间分12个月进行。对于每个PSU，更新操作在预定访谈前大约一个月进行。

二级抽样单元（SSU）的选择

二级抽样单元是选定的2500个一级抽样单元（普查区块）中的住宅单元。从每个一级抽样单元中选择了10个住宅单元（SSU）进行调查。总共选择了25000个住宅单元的样本，并在斯里兰卡各地区之间进行了分配。

数据收集方式
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面对面 [f2f]