Kenya National Bureau Statistics

1
Country Kenya

• Omenya Nyahul
• Kenya National Bureau of Statistics

Workshop Census Data Processing contemporary
technologies for census data capture and data
editing, Dar Es Salaam, Tanzania, 9-13 June 2008
2
Census History

• 1948
• 1962
• 1969
• 1979
• 1989
• 1999
• 2009 (forth-coming)

3
Census Processing

• 1948 1979
• ???

4
Census Processing (cont.)

• 1989
• Manual data entry using IMPS software
• Edits were carried out using ConCor module of
  IMPS
• Tabulation was done using CENTS module of IMPS
• Took 2 years to process

5
Census Processing (cont.)1999

• Receiving forms from the field
• Temporary storage
• Manual Editing
• Storage
• Preparation
• Scanning

• Completion
• Exception
• Archiving
• Data Cleaning
• IMPS/CSPro Edits
• IMPS/CSPro tabulation

6
Census Processing (cont.)

• Scanning
• Used ICR/OCR
• Procured 110 micro-computers, servers and
  printers
• Two types of scanners were procured Kodak models
  3500 and 9500
• AFPSPRO software was provided by an Israel
  Company TIS

7
Challenges

• The working space was insufficient resulting in
  overcrowding and hence poor supervision
• Lack of efficient tracking system for the
  movement of questionnaires from field up to
  tabulation
• Lack of fully licensed scanning software hampered
  questionnaire processing exercise

8
Challenges (cont.)

• Delay in procurement of hardware and software
  posed a big challenge.
• The scanning technology was not pilotted

9
Lesson learnt

• Having adequate storage facilities to accommodate
  the voluminous number of questionnaires is vital
  as it facilitates easy retrieval and monitoring.
  The lack of storage space, racks and cabinets
  resulted in loss of substantial time when
  tracking down the whereabouts of questionnaires
  belonging to some areas.
• Given the complexity of the processes to be
  undertaken, it is of paramount importance that
  staff involved in the implementation of various
  processes be fully trained.

10
Lesson learnt (cont.)

• The large number of steps and the overall speed
  of the processes mean that computer-assisted
  monitoring and control systems are required. Use
  of manual monitoring and control systems are
  inefficient.
• The requisite software to support hardware such
  as the one deployed in this census has to be in
  place before any data processing activity is
  embarked on. This requires careful technical
  evaluation of all aspects of hardware and
  software.

11
Way Forward

• To use ICR/OCR (OMR??) scanning technology
• Adequately prepare for the technology by
• Studying available scanning technologies
• Knowing the best practice by those who had used
  the technology and from experts
• Training our personnel on the use of the scanning
  technology
• Piloting on the use of the scanning technology
• Acquire fully licensed scanning software

12

• Thank You