Execution of Post Enumeration Surveys Pres. 4

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Execution of Post Enumeration SurveysPres. 4
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Implementation of PES

• Pilot-test
• This can be a dress rehearsal of the actual PES
  as the pilot census is a dress rehearsal of the
  census
• It can be conducted in selected administrative
  divisions (taking into account costs)
• The purpose of the pilot test is to test the
  adequacy of the entire PES plan and its
  organization
• It should be conducted in conditions similar to
  the actual enumeration of the actual PES

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Implementation of PES (contd.)

• Pilot test contd.
• Thus, it should follow immediately the census
  pilot test
• While it is not a source of usable data it
  provides insights into operational aspects of
  data collection that can contribute to a
  successful conduct of a PES and census
• Ideally it should be taken a year before the
  actual PES just as a pilot census is taken a year
  before a census (UN, 2008 PR)

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Implementation of PES (contd.)

• Pilot test contd.
• Provides an opportunity to test questions and the
  overall field methodology before mounting the PES
• It also offers a chance to test the matching and
  analytical procedures
• Results of the Pilot test contribute to
  establishment of matching rules, reconciliation
  procedures and logistical flows of documents
  between PES and census
• Estimates of precision for the PES can be made
  based on pilot test results, such as sampling
  errors

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Implementation of PES (contd.)

• Data collection
• Method commonly used in a PES is the face-to-face
  interview
• Enumerators go to households, in selected
  EAS/clusters, and interview respondents
• They collect information by asking questions from
  a PES questionnaire
• This method provides an opportunity for probing
• Enumerators can explain the objectives of the PES
  to respondents

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Implementation of PES (contd.)

• Questionnaire
• It should be based on the final census
  questionnaire in order to facilitate objective
  evaluation of the census
• The format and size of questionnaire are
  important for recording of responses and for data
  capture
• Pre-testing of questionnaire is imperative

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Implementation of PES (contd.)

• Qualities of a good questionnaire
• Should enable the collection of accurate data
• Facilitates the work of data collection,
  processing and tabulation
• Ensures economy in data collection, thus,
  avoiding collection of superfluous information
• Permits comprehensive and meaningful analysis of
  data

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Implementation of PES (contd.)

• Selection and training of field staff
• Enumerators are the interface with respondents
• Their work is critical to the success of the PES
  field work
• Their selection, is therefore, critical and
  should be done objectively
• In general, an enumerator should be able to
  communicate with respondents and have qualities
  needed to collect accurate information in a
  timely manner

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Implementation of PES (contd.)

• Selection and training of field staff contd.
• Must have adequate level of education and should
  be able to record information honestly
• The enumerator should follow instructions in the
  enumerators manual
• They should be thoroughly trained before being
  assigned field work
• The main objective of training is to enhance
  uniformity and minimize measurement error during
  interviews

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Implementation of PES (contd.)

• Training
• Qualified instructors well versed with the
  objectives of the PES should be responsible for
  training
• It is advisable that the trainers should be part
  of the PES planning and implementation teams
• Trainees should take turns in explaining to
  others various items in the questionnaire
• Practical lessons are essential both in the
  classroom and the field. Based on performance
  trainees can be retained as enumerators or
  dismissed

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Implementation of PES (contd.)

• The role of supervisors
• Despite good training of enumerators, without
  good supervision, in the field, there may be
  inaccurate results
• Need for dedicated and effective supervision
• Supervisors should be more experienced and better
  qualified than enumerators
• Like enumerators, they should undergo extensive
  training in all aspects of the PES

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Implementation of PES (contd.)

• The role of supervisors contd.
• Supposed to organize work for enumerators by
  determining field assignments
• They review completed work and maintain a high
  commitment of enumerators to the PES
• A supervisor can make follow-up visits to
  non-respondents as they are better qualified and
  experienced
• There should be a manageable ratio between
  enumerators and a supervisor 1 to 5 should be okay

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Implementation of PES (contd.)

• Field data collection
• During data collection objective is to classify
  individuals by enumeration status relative to
  census night
• Use of probing is necessary
• Some of the socio-demographic variables included
  in the census questionnaire are
• (a) Age
• (b) Sex
• (c) Relationship to reference person or head
  
• (d) Marital status
• (e) Education level

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Attributes of good PES data collection

• Timing of PES soon after census
• Maintain operational independence
• Ensure quality assurance
• Control, to the extent possible, non-sampling
  errors

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Implementation of PES (contd.)

• Control of non-sampling errors
• Should be controlled and reduced to the level
  that their presence does not compromise the
  usefulness of the PES results
• Particularly harmful when they are non-random
  because they introduce bias in the PES estimates
• Bias is difficult to measure
• Best way to control non-sampling error is to
  follow the right procedures in all PES activities

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Implementation of PES (contd.)

• Factors contributing to non-sampling error
• Vague objectives of the PES
• Duplication or omissions due to imprecise
  definition of boundaries of EAs
• Inappropriate methods of interviewing
• Lack of trained and experienced field
  interviewers and supervisors
• Inadequate identification particulars of sampling
  units
• Errors occurring in data processing

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