Post Enumeration Survey- 2000 Census by 7xiOU7O6

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									Post Enumeration Survey-
      2000 Census
           Presented
                By
        Batista Chilopa
     Central Statistical Office
             Zambia
DATES

 Census 2000 dates: 16th October 2000 to
  30th October
 PES Date: 23rd February 2001 for three
  weeks
 At least three months after the Census
  Enumeration
OBJECTIVES

 To Present census data to users with
  results of quantitative evaluation of the
  accuracy of the census data
 To identify the extent of over-coverage or
  under-coverage of population at all levels
  including; National ,rural, urban and
  province.

OBJECTIVES Continued

  To identify levels of agreement for
   responses related to questions on sex,
   relationship to head of household, marital
   status age and type of housing units
  To identify areas of improvement for
   future censuses
        PREPARATORY
         ACTIVITIES
 Identified Key Survey Personnel/Planning
  team:
 Survey coordinator
 Sampling Statistician
 Field Coordinators
 Data Processing Specialist
 Data analysts
 All were Central Statistical Office Personnel
PREPARATORY
ACTIVITIES Cont’
  Decided on level of aggregation and sample size
 -National Level
 -Sub-national Levels
 -Provinces, Rural & Urban
 -250 EAS
  Calculated the number of interviewers required and
   days needed in the field
  Established a work plan
  Estimated Budget (part of the National Census Budget)
PREPARATORY
ACTIVITIES Cont’
    Preparation of instruments
 -   Questionnaires
 -   Interviewer’s Manual
 -   Supervisor’s Manual
 -   Matching Instructions
 -   Field re-visit instructions
    Pretest and Pilot preceded main
     fieldwork
RECRUITMENT OF FIELD
       STAFF
   All Enumerators did not participate in
    Census enumeration (regular CSO Staff
    & School Leavers)
   Some supervisors had taken part in
    census
   All trainers and field coordinators had
    taken part in census
TRAINING

   Enumerators training manual was prepared
   Training took 1 week
   Central training
   Supervisors & Enumerators trained together
   Training manual for supervisors was also
    available –Last day of training for supervisors
SAMPLING DESIGN
   Stratified cluster sampling
   Sample size determination based on previous
    experience 1% of the total population
   Stratification: Provinces, Rural and Urban
   250 Primary Sampling Units selected with
    probability proportional to size (pps)
   All selected Clusters were to be covered on
    100% basis (institutionalized population was not
    covered)
FIELDWORK

 Trainers & field coordinators observed
  initial implementation of fieldwork
 Every Supervisor was assigned three
  enumerators
 Supervisors remained in the field through
  out
 Fieldwork ran for three weeks
MATCHING EXERCISE

 Matching was done manually using procedure
  C (matching non-movers & out-movers only)
 A case-by-case comparison of Census records
  with that of the PES after data collection
 Pairing each household and each person in
  PES with the corresponding Census records
    CASES FOR FIELD RE-
          VISITS
    A number of individuals were found in
     the census but not in PES and vice
     versa
    Entire PES enumeration Area (EA)
     failing to match with respective
     Census EA even when the
     geographical IDs matched
Field Re-visit

  Follow up visits for un-matched
   households and individuals were made
  To allow for identification of erroneous
   census enumerations and resolve some
   doubtful cases
  A reconciliation exercise in the office was
   conducted afterwards and data entered
        Data Analysis

 The match rate generated after all the
  needed reconciliations was only about
  70%.
 There was a huge PES population that
  had non-match status code
 The office was prompted to seek
  technical assistance through UNFPA
TA recommendations

  All cartographic maps that did not benefit from
   the pre-enumeration up-dates needed to be
   reviewed to assess their usefulness by the
   PES Enumerators.
  All PES EAs that were updated in the field
   during the census should also be reviewed,
   with the aim of assessing their application by
   the PES enumerators.
  .
TA recommendations
Cont’
  Households should be matched before
   individual matching i.e person matching should
   be undertaken only for matched households
  Cases where households in the whole SEA do
   not match should be assumed the PES
   enumerator is covering the different geographic
   area and the solution can only be possible by
   field work.
  Effort should be made; including relaxing rules
   so that the match rate is raised to more than 80
   percent.
TA Recommendations
Cont’
  The PES team should be involved in the data
   processing activities-formulas should be discussed with
   the data processing team before application.
  Data should be exported to SPSS and eventually excel
   which the PES team is familiar with which will be of
   great use when estimating content error and also help
   in checking input.
  Due to technical and financial constraints not all
   recommendations by the TA were implemented
  The office decided to compile only an administrative
   report
Lessons Learnt

  Pre enumeration cartographic works should be
   completed by the time of Census
  Questionnaire formats for both PES and
   Census should be similar to ease the matching
  Electronic matching should be considered
  Timely flow of resources is required
  Implementing appropriate time frames
 THANKYOU !

								
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