COVID-19 National Longitudinal Phone Survey 2020 – World Bank LSMS Harmonized Dataset - Nigeria

Abstract
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To facilitate the use of data collected through the high-frequency phone surveys on COVID-19, the Living Standards Measurement Study (LSMS) team has created the harmonized datafiles using two household surveys: 1) the country’ latest face-to-face survey which has become the sample frame for the phone survey, and 2) the country’s high-frequency phone survey on COVID-19.

The LSMS team has extracted and harmonized variables from these surveys, based on the harmonized definitions and ensuring the same variable names. These variables include demography as well as housing, household consumption expenditure, food security, and agriculture. Inevitably, many of the original variables are collected using questions that are asked differently. The harmonized datafiles include the best available variables with harmonized definitions.

Two harmonized datafiles are prepared for each survey. The two datafiles are:
1. HH: This datafile contains household-level variables. The information include basic household characterizes, housing, water and sanitation, asset ownership, consumption expenditure, consumption quintile, food security, livestock ownership. It also contains information on agricultural activities such as crop cultivation, use of organic and inorganic fertilizer, hired labor, use of tractor and crop sales.
2. IND: This datafile contains individual-level variables. It includes basic characteristics of individuals such as age, sex, marital status, disability status, literacy, education and work.

Geographic coverage
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National coverage

Analysis unit
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- Households
- Individuals

Universe
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The survey covered all de jure households excluding prisons, hospitals, military barracks, and school dormitories.

Kind of data
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Sample survey data [ssd]

Sampling procedure
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See “Nigeria - General Household Survey, Panel 2018-2019, Wave 4” and “Nigeria - COVID-19 National Longitudinal Phone Survey 2020” available in the Microdata Library for details.

Mode of data collection
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Computer Assisted Personal Interview [capi]

Cleaning operations
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Nigeria General Household Survey, Panel (GHS-Panel) 2018-2019 and Nigeria COVID-19 National Longitudinal Phone Survey (COVID-19 NLPS) 2020 data were harmonized following the harmonization guidelines (see “Harmonized Datafiles and Variables for High-Frequency Phone Surveys on COVID-19” for more details).

The high-frequency phone survey on COVID-19 has multiple rounds of data collection. When variables are extracted from multiple rounds of the survey, the originating round of the survey is noted with “_rX” in the variable name, where X represents the number of the round. For example, a variable with “_r3” presents that the variable was extracted from Round 3 of the high-frequency phone survey. Round 0 refers to the country’s latest face-to-face survey which has become the sample frame for the high-frequency phone surveys on COVID-19. When the variables are without “_rX”, they were extracted from Round 0.

Response rate
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See “Nigeria - General Household Survey, Panel 2018-2019, Wave 4” and “Nigeria - COVID-19 National Longitudinal Phone Survey 2020” available in the Microdata Library for details.

摘要
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为促进通过高频电话调查收集的COVID-19数据的利用，生活水平测量研究团队（Living Standards Measurement Study, LSMS）基于两项家庭调查创建了协调一致的数据文件：1）国家最新的面对面调查，该调查已成为电话调查的抽样框架；2）国家关于COVID-19的高频电话调查。
LSMS团队基于协调一致的定义提取并协调了这些调查中的变量，确保变量名称的一致性。这些变量包括人口统计信息、住房、家庭消费支出、粮食安全以及农业。不可避免地，许多原始变量是通过不同方式提出的问题收集的。协调一致的数据文件包含了最佳可用的变量，并具有协调一致的定义。
为每个调查准备了两个协调一致的数据文件。这两个数据文件包括：
1. HH：此数据文件包含家庭层面的变量。信息包括基本家庭特征、住房、供水和卫生设施、资产所有权、消费支出、消费五等分、粮食安全、牲畜所有权。还包括关于农业活动的信息，如作物种植、有机和无机肥料的施用、雇佣劳动、拖拉机的使用和作物销售。
2. IND：此数据文件包含个人层面的变量。包括个人的基本特征，如年龄、性别、婚姻状况、残疾状况、识字能力、教育和工作。
地理覆盖范围
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全国覆盖
分析单元
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- 家庭
- 个人
总体范围
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该调查覆盖了所有法定家庭，不包括监狱、医院、军营和学校宿舍。
数据类型
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样本调查数据 [ssd]
抽样程序
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详细信息请参阅“尼日利亚 - 2018-2019年一般家庭调查，面板2018-2019，第4轮”和“尼日利亚 - COVID-19国家纵向电话调查2020”在微观数据库中的内容。
数据收集方式
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计算机辅助个人访谈 [capi]
数据清理操作
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尼日利亚2018-2019年一般家庭调查，面板（GHS-Panel）和尼日利亚2020年COVID-19国家纵向电话调查（COVID-19 NLPS）的数据按照协调一致指南进行了协调一致处理（更多详细信息请参阅“关于COVID-19高频电话调查的协调一致数据文件和变量”）。
COVID-19高频电话调查进行了多轮数据收集。当从调查的多轮中提取变量时，调查的原始轮次会在变量名称中用“_rX”表示，其中X代表轮次的编号。例如，带有“_r3”的变量表示该变量是从第3轮高频电话调查中提取的。轮次0指的是成为COVID-19高频电话调查抽样框架的国家最新的面对面调查。当变量没有“_rX”时，它们是从轮次0中提取的。
响应率
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详细信息请参阅“尼日利亚 - 2018-2019年一般家庭调查，面板2018-2019，第4轮”和“尼日利亚 - COVID-19国家纵向电话调查2020”在微观数据库中的内容。