Nigeria - Nigeria Multiple Indicator Cluster Survey (MICS2)-1999, Second Round
Reference ID | NGA-NBS-MICS2-1999-V1.0 |
Year | 1999 |
Country | Nigeria |
Producer(s) | National Bureau of Statistics [NBS] - Federal Government of Nigeria(FGN) |
Sponsor(s) | National Bureau of Statistics - NBS - Funding United Nations of Children's Fund - UNICEF - Funding |
Metadata | Download DDI Download RDF |
Created on | Oct 18, 2010 |
Last modified | Dec 02, 2013 |
Page views | 280664 |
Downloads | 17455 |
Data Processing
Data Editing
MICS 1999 data were processed in 4 stages namely, manual editing and coding, data entry, data cleaning and tabulation.
Manual Processing
Completed questionnaires started arriving at the FOS headquarters two weeks after training in each of the two zones. The records were sent in two batches from each of the zones. The first batch from Southern zone was received on 8th March 1999 while the second batch was received on 5th April 1999. The Northern zone records were received on 22nd March 1999 and 12th April 1999 respectively.Manual processing started with the development of editing/coding guidelines which were used to train the officers on manual editing. The training, which took place in March 1999, involved officers selected from different levels in the office. The guidelines include errors that could be found in the completed questionnaires and how they could be
corrected. These likely errors include omissions, inconsistencies, unreasonable entries, impossible entries, double entries, transcription errors and others found in the questionnaires. After the completion of the training, which lasted for 3 days, the officers were tested and based on their performances,
9 officers were selected as supervisors while 20 officers were made editors. Four key officers on the survey served as co-ordinators.
Data Preparation
The data for MICS 1999 was prepared to meet the criteria of timeliness and quality in a number of unique ways. These include data collection, manual editing, data capture programs and regular meetings of various interest groups. Data for the survey was collected through FOS network of field offices located in the 31 states of the federation, including the Federal Capital Territory (FCT) Abuja and retrieved to the headquarters in Lagos. Upon arrival, the questionnaires were subjected to manual editing by a team of editors (8) headed by group supervisor (2) and coordinators (2). Data entry programs
were written for each questionnaire and the data were captured independently. The data entry version of the questionnaire using EPI Info 6.0 with error checks and skip instructions was prepared to capture the data by the data processing team led by a supervisor and a coordinator. There were also regular meetings of various stakeholders both internal (within FOS) and external (between FOS, UNICEF and/or other agencies) at intervals during the survey to oversee the data preparation.
Other Processing
Data Entry
The data entry was done manual.
The data entry started with a trial entry by the data entry clerks to acquaint them with the modalities and/or procedures for the data entry after which substantive data entry began. A total of about 30 operators working in two locations were involved. They worked in two groups, one group worked during the day while the other group worked during the night. This arrangement was resorted to in order to ensure efficient use of computer systems and personnel given the erratic electricity supply at the time. The data entry was completed within 2 weeks. Data entry supervisors working under the Data Processing Coordinator supervised data entry at each location.
Data Cleaning
Data entry was followed by trial tabulation to check for and to correct inconsistencies in the data. A frequency check was done on the values of the variables in all the modules to examine quality of the data. All inconsistencies found were reconciled and all errors found were corrected.
UNICEF also provided a Consultant from Macro International, New York, who evaluated the data and all inconsistencies discovered at this stage were also corrected. Analysis similarly benefited from the various workshops organized by the WCARO specifically for MICS 2
Data processing began in March 1999 and draft tables produced by August, 1999. The final tables were produced in September 2001. The delay in producing the final tables was due to the need to conduct extensive data verification and to the necessity to undertake a series of evaluations to ensure consistency and comparability of figures with those of other countries in the region.