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Classification and coding process

Classification criteria

Workplace address

The criterion used to place a person into the classification for workplace address is the address information (building name; street number, name, and type; suburb or rural locality; and city, town or district) as stated by the respondent.

Workplace address indicator

Information from the respondent on whether they worked at home, or away from home, is the criterion used to place a person into the classification for workplace address indicator.

Classification

Workplace address

The workplace address classification consists of a combination of classifications that are ordinarily stored independently of each other. There is a hierarchic relationship between the geographic classifications of meshblock, area unit, territorial authority and regional council. For example, meshblocks aggregate to form area units, and area units aggregate to form both territorial authorities and regional councils. The categories of each of these ordinarily independent classifications sit alongside each other at the same level of the workplace address classification.

Workplace address is therefore a flat classification. The standard codes are:

  • Meshblock codes (7 digits)
  • Area unit codes (6 digits) prefixed by ‘9’
  • Territorial authority codes (3 digits) prefixed by ‘9999’
  • Regional council codes (2 digits) prefixed by ‘99999
  • 9999944 Don't know
  • 9999955 Refused to answer
  • 9999977 Response unidentifiable
  • 9999988 Response outside scope
  • 9999996 No fixed workplace address
  • 9999998 New Zealand not further defined
  • 9999999 Not stated

Leading ‘9’s are used to create seven digit codes. Codes are available for addresses for which insufficient information is provided to allocate a meshblock, but enough information is provided for another area type (area unit, territorial authority or regional council) to be specified.

‘9999996 No fixed workplace address’ is a category for respondents who have no fixed reporting or assembly point.

‘9999998 New Zealand not further defined’ is a category for respondents who provided insufficient information for a meshblock, area unit, territorial authority or regional council to be allocated.

The standard meshblock, area unit, territorial authority, and regional council classifications that are current at the commencement of the survey cycle should be used.

The full classification is available in Download of classification.

Workplace address indicator

The classification of workplace address indicator is a flat classification with 2 categories – excluding residual categories.

  1. Worked at home
  2. Worked away from home
  3. Don't know
  4. Refused to answer
  5. Response unidentifiable
  6. Response outside scope
  7. Not stated
  8. The residual categories are defined in Glossary and references.
  9. The full classification is available in Download of classification.

Coding process

Workplace address

If the respondent states that they ‘work at home’, then workplace address should be coded to the same meshblock as usual residence.

If the respondent states that they ‘work away from home’ then the address given should be coded using either the Business Frame or geographic codefile. A codefile is a comprehensive list of probable survey responses and the classification categories to which they are coded. The geographic codefile contains street names and numbers, address aliases (an alternative name for an address, such as a building or institution name) and geographic features, and relates street attributes to meshblocks. The street data (stored in the Geographic Frame) is continually updated from information received from Land Information New Zealand, the Electoral Enrolment Centre and local authorities. The address alias data is updated from directories such as the Cityscope, UBD and Wises publications.

If there is insufficient information to code an address to the meshblock level, the response should be coded to area unit level if possible. If there is insufficient information to code an address to the meshblock or area unit level, the response should be coded to territorial authority level if possible. If there is insufficient information to code an address to the meshblock, area unit or territorial authority level, the response should be coded to regional council level if possible. If there is insufficient information to code an address to the meshblock, area unit, territorial authority or regional council level then workplace address should be coded to ‘9999998 New Zealand not further defined’.

Respondents who have indicated that they have no fixed workplace address and have provided no geographic information (for example, ‘all over the place’) should be coded to ‘9999996 No fixed workplace address’. Where geographic information is provided (for example, ‘all over Auckland’) then this should be used to allocate an area, even if it is only a regional council. Respondents who state that they were at sea should be coded to ‘9999998 New Zealand not further defined’.

If the respondent does not supply any information for workplace address, and has not indicated that they ‘work at home’, the category ‘9999998 New Zealand not further defined’ should be allocated.

Respondents who give an overseas address for workplace address should be coded to ‘9999998 New Zealand not further defined’.

Respondents who indicate that the workplace address of a farm covers separate blocks of land should be coded to the meshblock of the farm in the Business Frame. If the farm is not in the Business Frame the response should be coded to the address of the farm homestead.

Imputation is not recommended because there are no variables on which to base a reliable imputation procedure.

Workplace address indicator

If a respondent has selected both ‘work at home’ and ‘work away from home’ then:

1. If an address is given then this should be compared with the address given for usual residence.

a) If the addresses match then ‘work at home’ should be used.

b) If the addresses do not match then ‘work away from home’ should be used.

2. If no address is given then ‘work at home’ should be used.

 

If a respondent has selected neither ‘work at home’ or ‘work away from home’ then:

1. If an address is given then this should be compared with the address given for usual residence.

a) If the addresses match then ‘work at home’ should be used.

b) If the addresses do not match then ‘work away from home’ should be used.

2. If no address is given then the category ‘not stated’ should be allocated.

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