Integrated Household Survey 2001 - Bulgaria

Abstract
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The 2001 Bulgaria Integrated Household Survey was conducted by BBSS Gallup International under the supervision of the World Bank. Because of the expected excessive level of attrition due to the large time lag from the last survey and the massive internal and external migration since 1997, for the purpose of this survey it was decided to draw a new cross-section of households. Using the same stratified two-stage cluster design adopted in 1995, a similar nationally-representative sample was drawn by the National Statistical Institute (NSI) from the pre-census listing of the 2001 Population Census.

The main objective of the survey was to provide comparable poverty figures with the previous studies, the questionnaire used is virtually identical to the one used in the previous surveys and when changes were introduced particular attention was paid to maintain consistency with the previous questionnaires.

Geographic coverage
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National

Analysis unit
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- Households
- Individuals

Kind of data
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Sample survey data [ssd]

Sampling procedure
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Sample size is 2,875 households

As in 1995, the original sampling plan called for the selection of five households in each of 500 randomly selected census clusters. In 2001, six households per cluster were provided by NSI to Gallup and the sixth household was used to replace households in the original sample in cases of refusal or absence. Each field substitution had to be verified by the team leader and approved by the field supervisor. A total of 2,500 households were finally interviewed. In addition, 133 Roma households were oversampled to allow more significant statistical comparisons of the group in some of the analyses. Detailed rules for the selection of the oversample were given to the enumerators and each selection was verified by the team leader.

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

Research instrument
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Being a multi-purpose survey, the BIHS01 questionnaire follows the structure of a typical Living Standard Measurement Survey (LSMS). The survey collected exhaustive information for the estimation of a consumption aggregate. This includes food and non-food consumption expenditures as well as data for the imputation of housing rental value and the user value of durable goods. The questionnaire also contains comprehensive information for the estimation of income by source, as well as quite extensive information on health, education and the labor market.

The questionnaire has the following sections:
Section 1: Household Roster
Section 2: Migration
Section 3: Education
Section 4: Housing
Section 5.1: Food Expenditure and Consumption
Section 5.2: Purchase of Non-Food Commodities
Section 6.1: Employment - status and history of employment
Section 6.2: Main job - dependent activity (working for a salary or commission for somebody else)
Section 6.3: Second - dependent activity (working for a salary or commission for somebody else)
Section 6.4: Self employment - independent activity (working for yourself)
Section 6.5: Agricultural land
Section 6.6: Agriculture - crop production, yield
Section 6.7: Agriculture assets
Section 6.8: Agriculture - livestock: cattle, pigs, etc.
Section 6.9: Other Farming Income and Costs
Section 7.1: Remittances - Income Received from Absent Members of the Household or from Any Other Person.
Section 7.2: Remittances - Absent Household Members and Other Persons Who Received Contributions from the Household
Section 8.1: State old age pension
Section 8.2: Private old age pension
Section 8.3: Survivor's pension
Section 8.4: Disability pension
Section 8.5: Unemployment benefits - for all people above age 15
Section 8.6: Maternity and childcare benefits under the social assistance system
Section 8.7: In kind individual social benefits
Section 8.8: Summary of child benefit allowance
Section 8.9: Cash and in kind household social benefits
Section 8.10: Other forms of revenue/debts
Section 9.1: Household furniture and durable goods
Section 9.2: Real estate assets
Section 10: Health Status
Section 11. Ethnicity of main respondent

摘要
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2001年保加利亚综合家庭调查由BBSS Gallup International在世界银行的监督下进行。鉴于与前次调查相比存在较长的时滞以及自1997年以来的大规模内部和外部移民，为了本次调查的目的，决定抽取一个新的家庭横截面。采用与1995年相同的分层两阶段集群设计，国家统计局（NSI）从2001年人口普查的预编名单中抽取了类似的具有全国代表性的样本。

调查的主要目标是提供与前次研究可比的贫困数据，问卷几乎与之前调查中使用的问卷相同，在引入变化时，特别关注与先前问卷的一致性。

地理覆盖范围
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全国

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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样本量为2,875个家庭

与1995年一样，原始抽样计划要求在500个随机选择的普查集群中每个集群选择五个家庭。2001年，国家统计局（NSI）向Gallup提供了每个集群六个家庭，第六个家庭用于在原始样本中替换拒绝或缺席的家庭。每个现场替换都必须由团队领导验证并获得现场监督员的批准。最终共有2,500个家庭接受了访谈。此外，为允许对某些分析中的群体进行更有意义的统计分析，对133个罗姆家庭进行了超抽样。向调查员提供了超抽样选择的详细规则，每个选择都由团队领导验证。

数据收集方式
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面对面 [f2f]

研究工具
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作为一项多用途调查，BIHS01问卷遵循典型的生活水平测量调查（LSMS）的结构。该调查收集了用于估计消费总体的详尽信息，包括食品和非食品消费支出，以及用于估算住房租金价值和耐用消费品使用价值的资料。问卷还包含用于估算收入来源的综合信息，以及关于健康、教育和劳动市场的相当广泛的信息。

问卷包含以下章节：
第一章：家庭名册
第二章：迁移
第三章：教育
第四章：住房
第五章1. 食品支出和消费
第五章2. 非食品商品购买
第六章1. 就业 - 就业状态和就业历史
第六章2. 主要工作 - 依赖性活动（为他人赚取工资或佣金）
第六章3. 第二项依赖性活动 - 依赖性活动（为他人赚取工资或佣金）
第六章4. 自营 - 独立活动（为自己工作）
第六章5. 农业用地
第六章6. 农业 - 作物生产，产量
第六章7. 农业资产
第六章8. 农业 - 家畜：牛，猪等
第六章9. 其他农业收入和成本
第七章1. 汇款 - 收自家庭缺席成员或任何其他人的收入
第七章2. 汇款 - 收自家庭缺席成员和其他从家庭获得捐赠的人
第八章1. 国家养老金
第八章2. 私人养老金
第八章3. 生存者养老金
第八章4. 残疾人养老金
第八章5. 失业救济金 - 适用于所有15岁以上的人
第八章6. 社会援助制度下的生育和育儿福利
第八章7. 实物个人社会福利
第八章8. 孩童福利津贴摘要
第八章9. 现金和实物家庭社会福利
第八章10. 其他收入/债务形式
第九章1. 家庭家具和耐用消费品
第九章2. 房地产资产
第十章：健康状况
第十一章：主要受访者的民族身份