Tanzania High Frequency Welfare Monitoring Phone Survey - Round one to five 2022 -2021
Tanzania, 2021
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TZA-NBS-HFWMPS-R1-R5-2021-v01
Tanzania High Frequency Welfare Monitoring Phone Survey - Round one to five 2022 -2021
HFWMPS Round 1 to 5 - 2021 - 2021
| Name | Country code |
|---|---|
| Tanzania | TZA |
Socio-Economic/Monitoring Survey [hh/sems]
The Tanzania High Frequency Welfare Monitoring Phone Survey, Round 1 to 5 presents the results of scientific rounds of the Tanzania High Frequency Welfare Monitoring Phone Survey (THFWMPS) which was conducted by the National Bureau of Statistics (NBS) and Office of Chief Government Statistician (OCGS) Zanzibar, in collaboration with World Bank (WB) and the Research on Poverty Alleviation (REPOA).
The recent global economic slowdown, caused by the COVID-19 pandemic, created an urgent need for timely data to monitor the socioeconomic impacts of the pandemic. Tanzania is among other countries in the world which are affected by the recent global economic slowdown, caused by the COVID-19 pandemic. Therefore, there is an urgent need for timely data to monitor and mitigate the socio-economic impacts of the crisis in the country. Responding to this need, the National Bureau of Statistics (NBS) and the Office of the Chief Government Statistician (OCGS), Zanzibar in collaboration with the World Bank and Research on Poverty Alleviation (REPOA) implemented a rapid household telephone survey called the Tanzania High-Frequency Welfare Monitoring Survey (HFWMS).
Thus, the main objective of the survey is to obtain timely data that is critical for evidence-based decision making aimed at mitigating the socio-economic impact of the downturn caused by COVID-19 pandemic by filling critical gaps of information that can be used by the government and stakeholders to help design policies to mitigate the negative impacts on its population.
Sample survey data [ssd]
Households
Individuals
Version
v01: Edited, anonymized dataset for public distribution (Public Use File)
2021-12-23
Version 01: Includes metadata related to Round 1 to 5
Scope
Round 1 to 5 of the Phone Survey have the following modules:
• Basic Information - Household Roster (Baseline, Round 2, 3, 4, 5)
• Employment (Baseline, Round 2)
• Employment (respondent) (Round 3, 4, 5)
• Employment (other household members) (Round 3, 4, 5)
• Education (Baseline, Round 2)
• Access to Basic Services (Baseline)
• Access to Health Services (Round 2)
• Health Access (Round 5)
• Mental Health (Baseline)
• Food Security (Baseline)
• TASAF (Baseline, Round 2)
• Non-farm Enterprise (Round 2, 3, 4, 5)
• Tourism (Round 2)
• Credit (Rounds 3, 4)
• Shocks and Coping (Round 3, 4)
• Women Savings (Rounds 3, 4)
• COVID-19 Vaccine (Round 5)
• Youth Contact Details (Round 5)
Coverage
National
The survey covered all de jure households excluding prisons, hospitals, military barracks, and school dormitories.
Producers and sponsors
| Name | Affiliation |
|---|---|
| National Bureau of Statistics | Ministry of Finance, Tanzania |
| Office of Chief Government Statistician | President Office, Finance and Planning |
| Name | Affiliation | Role |
|---|---|---|
| Living Standards Measurement Study Team | World Bank | Technical Assisstance |
| Akuffo Amankwah | World Bank | Technical Assisstance |
| Darcey Jeanne | World Bank | Technical Assisstance |
| Amparo Palacios-Lopez | World Bank | Technical Assisstance |
| Francis Lavoe | World Bank | Technical Assisstance |
| Emillian Karugendo | World Bank | Technical Assisstance |
| Ali Idrisa | World Bank | Technical Assisstance |
| Bakari Kitwana | World Bank | Technical Assisstance |
| Abdallah Hussein | World Bank | Technical Assisstance |
| Edwin Magoti | World Bank | Technical Assisstance |
| Name | Abbreviation | Role |
|---|---|---|
| The Government of Tanzania | TZA | Financial support |
| World Bank | WB | Financial support |
| Bill and Melinda Gates Foundation | BMGF | Financial support |
| Research on Poverty Alleviation | REPOA | Financial support |
| Name | Affiliation | Role |
|---|---|---|
| Magreth Maganda | NBS | Coordinator, NBS |
| Hamisa Suleiman | OCGS | Coordinator, OCGS |
Sampling
Phase one of the Tanzania High Frequency Welfare Monitoring Panel Survey (THFWMPS I) draws its sample from various previous face-to-face surveys, including the Mainland Household Budget Survey (HBS) 2017/18, the Zanzibar HBS 2019/20, and the National Panel Survey (NPS) 2014. The inclusion of telephone numbers from most participants of these surveys provides the foundation for the survey sample.
The target for monthly sample completion is approximately 3,000 households. The NPS serves as the primary sample frame, supplemented by the Mainland and Zanzibar HBS. For THFWMPS Phase II, the sample frame comprises respondents from Phase I who did not explicitly refuse to participate (2,200 households), alongside additional households from the 2021 Booster sample of NPS Wave 5 (NPS 5) households with available phone numbers.
Baseline
An attempt was made to reach all 5,750 households selected from the NPS 2014/15 and HBS 2017/18 sample. However, at the end of the survey 2,829 households were contacted and 2,708 of those were successfully interviewed with complete information. More details on the contact/response rates can be found in Table 7-7 of the BID: Round 1 - Result of Interview.
Round 2
Interviewers attempted to contact and interview all 2,732 households that were successfully interviewed (including some partially interviewed) in the baseline of the HFWMS. As shown in Table 7-2 of the BID, 2,470 households (90.4% of the 2,732 attempted) were contacted and 2,416 (88.4%) were successfully interviewed in the second round. Of those contacted, 44 households refused outright to be interviewed and 9 were partially interviewed.
Round 3
Interviewers attempted to contact and interview all 2,732 households that were successfully interviewed (including some partially interviewed) in the baseline of the HFWMS. As shown in Table 7-27 of the BID, 2,404 households (88.4% of the 2,719 attempted) were contacted and 2,404 (85.9%) were successfully interviewed in the third round. Of those contacted, 54 households refused outright to be interviewed and 12 were partially interviewed. Of the 2,404 successfully interviewed in Round 3, 2,222 have been interviewed successfully in all three rounds. These are the households that form a complete panel across the three rounds.
Round 4
Interviewers attempted to contact and interview all 2,710 households that were successfully interviewed (including some partially interviewed) in the baseline of the HFWMS. As shown in Table 7-210 of the BID, 2,404 households (88.4% of the 2,719 attempted) were contacted and 2,404 (85.9%) were successfully interviewed in the third round. Of those contacted, 54 households refused outright to be interviewed and 12 were partially interviewed.
Round 5
Interviewers attempted to contact and interview all 2,700 households that were successfully interviewed (including some partially interviewed) in the baseline of the HFWMS. As shown in Table 7-213 of the BID, 2,251 households (83.4% of the 2,700 attempted) were contacted and 2,193 (85.9%) were successfully interviewed in the fifth round. Of those contacted, 46 households refused outright to be interviewed and 10 were partially interviewed.
Baseline
The final household weights for round 1 can be found in the household-level data file (r1_sect_a_3_4_5_6_7_8_10). The variable name is wt_round1.
Round 2
Household weights
The round 1 household weights were adjusted for noncontact and nonresponse as well as calibrated following the same procedures outlined in section 2.2 (steps 4 to 7). The round 2 weights can be found in the household-level data file (r2_sect_a_2_3_4_5_7_8_10). The variable name is wt_round2.
Individual weights
Given the focus on individual education information in round 2 for school-aged members (4-18 years), an additional individual weight was calculated specifically for use with this sample. The round 2 household weight (which includes the household level nonresponse adjustments) served as the base for the individual education weight. Since all members between 4 and 18 years of age were selected, there was no need for a selection adjustment to this weight. Furthermore, there was zero nonresponse among children in the sample (since the information was collected entirely from the main household respondent) so no nonresponse adjustment was likewise needed. However, the weights were recalibrated to reflect current population estimates for five age groups (4-6, 7-9, 10-12, 13-15, and 16-18 years) and by sex. BID Table 7-4 presents the 2021 population estimates used for the calibration. The calibration of the individual weights followed the same approach outlined in step 6 of BID Section 3.0 above for the round 1 household weights. The weights were also trimmed according to step 7 of BID Section 3.0, however the cut offs for the trimming were set at the 2nd and 98th percentiles due to higher volume of outliers in the calibrated individual weights. The variable containing the individual education weight is called educ_wt_r2 and can be found in the individual-level education data file (r2_sect_2_6.dta).
Round 3
Household Weights
In Round 3, two different household level weights are provided: cross section and panel weights. The cross-section weights are applicable to the entire round 3 sample while the panel weights are only applicable to round 3 sample households that have been successfully interviewed in all three rounds of the survey so far. For both of these weights, the round 1 household weights were adjusted for noncontact and nonresponse as well as calibrated following the same procedures outlined in section 2.2 (steps 4 to 7). The round 3 weights can be found in the household-level data file (r3_sect_a_2_3_4_5b_7_10). The cross-section weight is contained in wt_round3 while the panel weight can be found in wt_panel_round3.
Individual weights
Given the focus on individual employment information in round 3 for working-age members (15-64 years), an additional individual weight was calculated specifically for use with this sample. The round 3 household weight (which includes the household level nonresponse adjustments) served as the base for the individual employment weight. Since only 4 eligible working-age members between 15 and 64 years were selected, there was the need for a selection adjustment to this weight. For more details, see BID Section 7.3.2 Sample and weights.
Round 4
Household Weights
In Round 4, two different weights are provided: cross section and panel weights. The cross-section weights are applicable to the entire round 4 sample while the panel weights are only applicable to round 4 sample households that have been successfully interviewed in all four rounds of the survey so far. For both of these weights, the round 1 household weights were adjusted for noncontact and nonresponse as well as calibrated following the same procedures outlined in section 2.2 (steps 4 to 7). The round 4 weights can be found in the household-level data file (r4_sect_a_2_3_4_9b_10). The cross-section weight is contained in wt_round4 while the panel weight can be found in wt_panel_round4.
Round 5
Household Weights
In Round 5, two different weights are provided: cross section and panel weights. The cross-section weights are applicable to the entire round 5 sample while the panel weights are only applicable to round 5 sample households that have been successfully interviewed in all four rounds of the survey so far. For both of these weights, the round 1 household weights were adjusted for noncontact and nonresponse as well as calibrated following the same procedures outlined in section 2.2 (steps 4 to 7). The round 5 weights can be found in the household-level data file (r5_sect_a_2_3_4_5f_9a_10). The cross-section weight is contained in wt_round5 while the panel weight can be found in wt_panel_round5.
Survey instrument
Each survey round consists of one questionnaire - a Household Questionnaire administered to all households in the sample.
Baseline
The questionnaire gathers information on demographics; employment; education; access to basic services; food security; TASAF; and mental health. The contents of questionnaire are outlined below:
- Cover: Household identifiers and enumerator identifiers.
- Interview Information: Details of call attempts, result and respondent of call attempt, interview consent, date and time of call back, phone numbers called, the information of the person that the listed phone number belongs to.
- Basic Information: Roster of members of the household, relationship to the household head, gender, age, relationship to head, reason for joining the household if new, and reason for leaving the household if left.
- Employment: Status and information of income-generating activities (wage work, family business and farming), reason for stopped working, reason for not able to perform activities as usual, and reason for reduced revenue from family business.
- Education: School attendance, type of school attended, learning activities of children at home, return to school, contact with children’s teachers during school closure.
- Access to Basic Services:Household’s access to staple food (maize grain, cassava, rice, and maize flour), medical treatment, and reasons for not being able to access the services.
- Food Security: Household’s food security status during the last 30 days.
- TASAF: Households access to the TASAF money, use of the money received, challenges encountered in accessing the funds.
- Mental Health: Information on 8 items pertaining to measuring mental health.
- Recontact: Data on how the household can be recontacted in the future.
- Interview Results: Result of interview including observation notes by enumerator regarding the interview, respondent and language of interview.
Round 2
The questionnaire gathers information on demographics; employment; non-farm enterprise; tourism; education; access to health services; and TASAF. The contents of questionnaire are outlined below:
- Cover: Household identifiers and enumerator identifiers.
- Interview Information: Details of call attempts, result and respondent of call attempt, interview consent, date and time of call back, phone numbers called, the information of the person that the listed phone number belongs to.
- Basic Information: Roster of members of the household, relationship to the household head, gender, age, relationship to head, reason for joining the household if new, and reason for leaving the household if left.
- Employment: Status and information of income-generating activities (wage work, family business and farming), reason for stopped working, and reason for not able to perform activities as usual.
- Non-farm Enterprise: Status and information of non-farm income-generating activities, reason for stopped operating, reason for not able to perform activities as usual, and reason for reduced revenue from family business.
- Tourism: Employment of household members in tourism sector, and who benefits from tourism.
- Education (selected members aged 4-18 years): School attendance, reason for not attending, grade attending, type of school, absence and reason for being absent.
- Access to Health Services: Women’s access to pre-natal/post-natal care, household’s access to preventative care and medical treatment, and reasons for not being able to access the services.
- TASAF: Households access to the TASAF money, use of the money received, challenges encountered in accessing the funds.
- Recontact: Data on how the household can be recontacted in the future.
- Interview Results: Result of interview including observation notes by enumerator regarding the interview, respondent and language of interview
Round 3
The questionnaire gathers information on demographics; employment (respondent and other household members); non-farm enterprise; credit; women savings; and shocks and coping. The contents of questionnaire are outlined below:
- Cover: Household identifiers and enumerator identifiers.
- Interview Information: Details of call attempts, result and respondent of call attempt, interview consent, date and time of call back, phone numbers called, the information of the person that the listed phone number belongs to.
- Basic Information: Roster of members of the household, relationship to the household head, gender, age, relationship to head, reason for joining the household if new, and reason for leaving the household if left.
- Employment (respondent): Status and information of income-generating activities (wage work, family business and farming), reason for stopped working, and reason for not able to perform activities as usual.
- Employment (other members): Status in employment (current and 2020), consistency of work in 2020, why currently not working, job search, change in jobs, actual job.
- Non-farm Enterprise: Status and information of non-farm income-generating activities, reason for stopped operating, reason for not able to perform activities as usual, and reason for reduced revenue from family business.
- Credit: Household’s debts status since the beginning of the coronavirus crisis; use of loan, ability to repay loan when their scheduled payment is due.
- Women Savings: Women having bank accounts to financial institutions and changes in their savings since the start of the pandemic.
- Shocks and Coping: Shocks that affected household since the baseline interview and their coping strategies.
- Recontact: Data on how the household can be recontacted in the future.
- Interview Results: Result of interview including observation notes by enumerator regarding the interview, respondent and language of interview.
Round 4
The questionnaire gathers information on demographics; employment; non-farm enterprise; digital technology; and income changes. The contents of questionnaire are outlined below:
- Cover: Household identifiers and enumerator identifiers.
- Interview Information: Details of call attempts, result and respondent of call attempt, interview consent, date and time of call back, phone numbers called, the information of the person that the listed phone number belongs to.
- Basic Information: Roster of members of the household, relationship to the household head, gender, age, relationship to head, reason for joining the household if new, and reason for leaving the household if left.
- Employment (respondent): Status and information of income-generating activities (wage work, family business and farming), reason for stopped working, and reason for not able to perform activities as usual.
- Non-farm Enterprise: Status and information of non-farm income-generating activities, reason for stopped operating, reason for not able to perform activities as usual, and reason for reduced revenue from family business.
- Income changes: Household’s sources of livelihood.
- Digital Technology: Household ownership of phones, computers and digital devices, access to internet and challenges in accessing internet
- Recontact: Data on how the household can be recontacted in the future.
- Interview Results: Result of interview including observation notes by enumerator regarding the interview, respondent and language of interview.
Round 5
The questionnaire gathers information on demographics; employment; non-farm enterprise; COVID-19 Vaccine; access to health services; and youth contact details. The contents of questionnaire are outlined below:
- Cover: Household identifiers and enumerator identifiers.
- Interview Information: Details of call attempts, result and respondent of call attempt, interview consent, date and time of call back, phone numbers called, the information of the person that the listed phone number belongs to.
- Basic Information: Roster of members of the household, relationship to the household head, gender, age, relationship to head, reason for joining the household if new, and reason for leaving the household if left.
- Employment (respondent): Status and information of income-generating activities (wage work, family business and farming), reason for stopped working, and reason for not able to perform activities as usual.
- Non-farm Enterprise: Status and information of non-farm income-generating activities, reason for stopped operating, reason for not able to perform activities as usual, and reason for reduced revenue from family business.
- Youth Contact Details: Administered to randomly selected household members aged 15-25 years old. Ownership of working cell phone, phone numbers.
- Health Access: Household’s access to medical services, reason for not being able to access the services.
- COVID-19 Vaccine: Respondent perception of the COVID-19 vaccine, willing to take the vaccine, information about the vaccine, and sources of such information.
- Recontact: Data on how the household can be recontacted in the future.
- Interview Results: Result of interview including observation notes by enumerator regarding the interview, respondent and language of interview.
Data collection
| Start | End | Cycle |
|---|---|---|
| 2021-02-21 | 2021-03-15 | Round 1 |
| 2021-04-22 | 2021-05-21 | Round 2 |
| 2021-06-30 | 2021-07-31 | Round 3 |
| 2021-09-10 | 2021-10-08 | Round 4 |
| 2021-11-30 | 2021-12-23 | Round 5 |
- Computer Assisted Personal Interview [capi]
| Name | Affiliation | Abbreviation |
|---|---|---|
| National Bureau of Statistics | Ministry of Finance | NBS |
| Office of the Chief Government Statistician | President Office, Ministry of Finance | OCGS |
There were three teams of which each was administered by the Supervisor. The role of the Supervisors were to assign tasks and receiving completed questionnaire , verifying them and approve or reject back to interviewers for corrections. They were reporting the progress of the data collection to the phone survey coordinator.
The HFWMS Baseline was administered between February 21 and March 15, 2021. A total of 22 interviewers among which 19 from Tanzania Mainland and three enumerators from Zanzibar and 4 supervisors whereby three Tanzania Mainland and one for Zanzibar conducted the survey including three Information Technology staff two from Mainland and one from Zanzibar.
The Tanzania HFWMS Round 2 was administered between April 22 and May 21, 2021. The same 22 interviewers and 4 supervisors were involved in the fieldwork.
The Tanzania HFWMS Round 3 was administered between June 30 and July 31, 2021 with 22 interviewers and 4 supervisors involved in the fieldwork
The Tanzania HFWMS Round 4 was administered between Sept 10 - Oct 8, 2021. A total of 22 interviewers and 2 supervisors were involved in the fieldwork.
The Tanzania HFWMS Round 5 was administered between Nov 30 - Dec 23, 2021. A total of 22 interviewers and 4 supervisors and three IT staff were involved in the fieldwork.
Data processing
Data Processing
The data processing and data editing phases were critical components of the High Frequency Survey . These phases ensure that the collected data is of high quality, consistent, coherent, and ready for analysis and reporting. The technical team responsible for these tasks included members from the National Bureau of Statistics (NBS), the Office of the Chief Government Statistician (OCGS), University of Dodoma (UDOM) and The Eastern Africa Statistical Training Centre (EASTC)
Stata programs was used during data analysis.
Data Entry:
Enumerators entered data directly into tablets during interviews, eliminating the need for a separate data entry activity. This method minimized errors associated with manual data entry. Data collected in the field was periodically synchronized with a central database, ensuring that the information was securely stored and readily accessible for processing.
Data Access
| Name | Affiliation | URL | |
|---|---|---|---|
| Statistician General | National Bureau of Statistics | www.nbs.go.tz | sg@nbs.go.tz |
| Chief Government Statistician | Office of Chief Government Statistician Zanzibar | www.ocgs.go.tz | cgs@ocgs.go.tz |
| Director, Coordination and Reserach | National Bureau of Statistics | www.nbs.go.tz | emilian.karugendo@nbs.go.tz |
| Director, Standard, Coordination and Research | Office of Chief Government Statistician Zanzibar | www.ocgs.go.tz | bakar.makame@ocgs.go.tz |
| Manager, Database Management | Office of Chief Government Statistician Zanzibar | www.ocgs.go.tz | abdullah.makame@ocgs.go.tz |
| Manager, Standard, Coordination and Research | Office of Chief Government Statistician Zanzibar | www.ocgs.go.tz | hamisa.faki@ocgs.go.tz |
| Manager, Coordination and Field Operation | National Bureau of Statistics | www.nbs.go.tz | Magreth.Maganda@nbs.go.tz |
| Is signing of a confidentiality declaration required? | Confidentiality declaration text |
|---|---|
| yes | Confidentiality of respondents is guaranteed by The Statistics Act, [Cap 351 R.E 2019] Before being granted access to the dataset, all users have formally agreed: 1. All identifying information such as the name and address of respondent has been removed; 2. The information is disclosed in a manner that is not likely to enable the identification of the particular person or undertaking or business to which it relates. 3. Not attempt to identify any particular person or undertaking or business; 4. Use of information for research or statistically purpose only; 5. Not to disclose the information to any other person, organization 6. When required by the Staticistian General, return all documents made available; 7. Comply with the directions given by the Staticistian General relating to the records. 8. Every person involved in the research or statistical project for which information is disclosed pursuant to this section shall make the declaration of secrecy set out in the first schedule. |
Users do not need to obtain the permission of the NBS to receive a copy of the data but will be asked to fill in a data access agreement. In this agreement, users agree to: (a) cite the National Bureau of Statistics as the collector of the data in all reports, publications and presentations; (b) provide copies of all report’s publications and presentations to the National Bureau of Statistics (see address below) and the Data Production and Methods Team of the World Bank (see address below); and (c) not pass the data to any third parties for any reasons.
Statistician General,
National Bureau of Statistics,
Jakaya Kikwete Road,
P.O. Box 2683,
Dodoma,
Tanzania
www.nbs.go.tz
Email: sg@nbs.go.tz
LSMS Data Manager
Data Production and Methods Team (DECPM)
The World Bank
1818 H Street, NW
MSN MC3-306
Washington, DC 20433
http://surveys.worldbank.org/lsms
Email: lsms@worldbank.org
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
National Bureau of Tanzania - High Frequency Welfare Monitoring Phone Survey (HFWMPS) Round 6 to 12 - 2022 - 2024. Ref: TZA-NBS-HFWMPS-R6-R12-2024-v01. Dataset downloaded from www.nbs.go.tz
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.
(c) 2025, National Bureau of Statistics
Contacts
| Name | Affiliation | URL | |
|---|---|---|---|
| Magreth Maganda | Survey Coordinator, NBS | magreth.maganda@nbs.go.tz | www.nbs.go.tz |
| Hamisa Suleiman | Survey Coordinator, OCGS | hamisa.suleiman@nbs.go.tz | www.ocgs.go.tz |
Metadata production
DDI-TZA-NBS-HFWMPS-R1-R5-2021-v01
| Name | Abbreviation | Affiliation | Role |
|---|---|---|---|
| National Bureau of Statistics | NBS | Ministry of Finance | Documentation of the DDI |
2025-01-01
Metadata version
Version 01 (January 2025)
2025-01-07