COVID-19 National Longitudinal Phone Survey 2020 – World Bank LSMS Harmonized Dataset
Nigeria, 2018 - 2021
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NGA_2020_NLPS_v01_M_v02_A_COVID
COVID-19 National Longitudinal Phone Survey 2020 – World Bank LSMS Harmonized Dataset
| Name | Country code |
|---|---|
| Nigeria | NGA |
Other Household Survey [hh/oth]
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:
- 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.
- 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.
Sample survey data [ssd]
- Households
- Individuals
Version
The World Bank LSMS Harmonized datasets includes harmonized variables, produced by the Living Standards Measurement Study team of the World Bank.
Version 02: Includes variables from Nigeria - General Household Survey, Panel 2018-2019, Wave 4 and Nigeria - COVID-19 National Longitudinal Phone Survey 2020, Round 1 to Round 11
Version 02 updates:
- Variables from Round 9 to Round 11 were added
- Consumption variables were added
- Disability and respondent variables were updated
Scope
The scope of the harmonized files includes:
HOUSEHOLD:
- Basic household characteristics
- Housing
- Water and sanitation
- Ownership of durable assets
- Consumption expenditure (total, food, and non-food)
- Consumption quintile
- Remittance
- Food security
- Ownership of non-farm enterprise
- Agricultural activities
- Ownership of livestock
INDIVIDUAL:
- Demographic characteristics (sex, age)
- Marital status
- Disability status
- Literacy
- Education
- Work
Coverage
National coverage
The survey covered all de jure households excluding prisons, hospitals, military barracks, and school dormitories.
Producers and sponsors
| Name | Affiliation |
|---|---|
| National Bureau of Statistics (NBS) | Federal Government of Nigeria |
| Name | Role |
|---|---|
| The World Bank | Collaborated in the implementation of the survey, Harmonized the dataset |
| Name | Role |
|---|---|
| Bill and Melinda Gates Foundation | Funded the study |
| Federal Government of Nigeria | Funded the study |
| United States Agency for International Development | Funded the study |
Sampling
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.
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.
Data collection
| Start | End | Cycle |
|---|---|---|
| 2018-07 | 2018-09 | Round 0 (Post-planting) |
| 2019-01 | 2019-02 | Round 0 (Post-harvest) |
| 2020-04-20 | 2020-05-11 | Baseline (Round 1) |
| 2020-06-02 | 2020-06-16 | Round 2 |
| 2020-07-06 | 2020-07-20 | Round 3 |
| 2020-08-09 | 2020-08-24 | Round 4 |
| 2020-09-07 | 2020-09-21 | Round 5 |
| 2020-10-09 | 2020-10-24 | Round 6 |
| 2020-11-07 | 2020-11-23 | Round 7 |
| 2020-12-05 | 2020-12-21 | Round 8 |
| 2021-01-09 | 2021-01-25 | Round 9 |
| 2021-02-06 | 2021-02-22 | Round 10 |
| 2021-03-13 | 2021-03-30 | Round 11 |
Data processing
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.
Data Access
Before being granted access to the dataset, all users have to formally agree:
- To make no copies of any files or portions of files to which s/he is granted access except those authorized by the data depositor.
- Not to use any technique in an attempt to learn the identity of any person, establishment, or sampling unit not identified on public use data files.
- To hold in strictest confidence the identification of any establishment or individual that may be inadvertently revealed in any documents or discussion, or analysis. Such inadvertent identification revealed in her/his analysis will be immediately brought to the attention of the data depositor.
Use of the dataset must be acknowledged using a citation which would include:
- the Identification of the Primary Investigator
- the title of the survey (including country, acronym and year of implementation)
- the survey reference number
- the source and date of download
Example: National Bureau of Statistics. COVID-19 National Longitudinal Phone Survey (COVID-19 NLPS) 2020 – World Bank LSMS Harmonized Dataset. Dataset downloaded from [URL] on [date].
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 | |
|---|---|---|
| LSMS Data Manager | The World Bank | lsms@worldbank.org |
Metadata production
DDI_NGA_2020_NLPS_v01_M_v02_A_COVID
| Name | Affiliation | Role |
|---|---|---|
| Development Economics Data Group | The World Bank | Documentation of the DDI |
2021-02-25
Metadata version
Version 02 (October 2021). Updated metadata for harmonized datasets.