Nigeria - Nigeria Living Standards Survey 2018-2019

Start	End	Cycle
2018-09-28	2019-09-28	N/A

Computer Assisted Personal Interview [capi]
ORGANIZATION OF FIELDWORK: Each state had one field team comprising one supervisor and three interviewers, who worked in a roving manner. The team traveled to an EA, interviewed all selected households and conducted the community interview, including collecting market prices, and then moved to the next EA. Teams spent on average 3 days in an EA, with each interviewer interviewing one household per day. The supervisor administered the community questionnaire, collected the market prices, and then interviewed one remaining household after the 3 interviewers had each interviewed 3 households over the 3-day period. Thus, in addition to the community questionnaire, the supervisor conducted one household interview per EA. Besides interviewing all selected households fully and accurately, spending 3 days per EA allowed the team to also address all error checks, comments, and feedback that were sent to them by the data editor, NBS headquarters team, and the World Bank technical team.

Given that the survey was conducted over a 12-month period, the teams were in the field throughout the duration of the fieldwork except for scheduled breaks. Longer breaks in the fieldwork occurred in the holiday period of late December/early January as well as during the federal elections held in February 2019. Shorter breaks occurred for other holidays such as Easter and Eid.

PRE-LOADED INFORMATION: Basic identification information (location, household head name, phone number, etc.) on every household was pre-loaded in the CAPI assignments for each interviewer. The information was pre-loaded to assist interviewers in locating and identifying the household. The pre-loaded basic household information was derived from the household listing exercise.

Name	Abbreviation	Affiliation
National Bureau of Statistics	NBS	Federal Government of Nigeria

IN-PERSON MONITORING OF FIELDWORK: To ensure that good quality data is collected, an extensive field monitoring exercise was mounted during the 12-months of data collection. The first monitoring was implemented immediately after the second level training and at the start of the fieldwork. In the first round of monitoring, one senior technical staff (trainer) that was part of the first and second training was assigned to monitor field teams in 2-3 states. These monitors visited their respective teams 4 times during the 12-month period, with the visits scheduled such that the monitors visit the field teams every quarter. On each visit to the team, the monitors spent up to 6 days with the team, including field visits to oversee interviews and conduct spot-checks.

The monitors were tasked with ensuring the interviewers were fully conforming with the procedures laid out in the manual and explained during training as well as effecting necessary corrections and tackling any problems that the field teams might face. During each visit to the teams, monitors were given a monitoring questionnaire to complete and upload to the project server. This was to ensure that the monitors visited the teams, spent the required number of days with the teams, and reported vividly and accurately, their observations from their monitoring visit. The monitors were also charged to continue to follow-up with the teams in their respective states throughout the course of the fieldwork, remotely address any issues or challenges that they might have, and filter unsurmountable challenges to the management and senior technical persons to address.

During the periods when the monitors are not with the teams, the state officers and zonal controllers took in-person field monitoring responsibilities, reporting directly to headquarters any issues/challenges that could mar the quality of the data collected. While the state officers monitored in their own state, the zonal controllers conducted monitoring in at least 2 states (the zonal headquarters state and one other state of the same zone).

REMOTE MONITORING OF FIELDWORK: In addition to the in-person monitoring of quality of the data collection by the monitors, there was also an extensive remote monitoring effort conducted by NBS ICT team and the World Bank technical team. The first level of remote monitoring was performed by the NBS ICT (data editors and data managers). The data editors would review every incoming interview from the field for any potential errors or omissions. Their review was also complimented by the second level of monitoring performed by the data managers and the World Bank technical team. Each day, the live data was downloaded from the server and a comprehensive set of error, outlier, and consistency checks were performed on newly submitted interviews. A report was generated for each case and provided to the data editors. The data editors reviewed the issues identified and included them in their own review of the interviews. If any issues were identified by the data editor’s review or from the global data checks, then the data editor would make comments in the interview and reject it back to the interviewer for them to address the identified issues. Data editors would also contact interviewers or supervisors for persistent or complicated problems that need to be more thoroughly addressed. After the issues were addressed either through a re-interview of the household or explanation by the interviewer, the interviewer would send the interview back to the data editor who would either approve the case or reject back for further clarification.

In addition to the daily interview review and global data checks, a dashboard was developed which tracked fieldwork progress and interviewer performance. This dashboard allowed NBS coordinators and the World Bank technical team to more broadly monitor data quality and spot consistent issues or particular teams who needed additional attention.