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Household Income and Expenditure Survey - 1990-1991

Sri Lanka, 1990 - 1991
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Reference ID
LKA_1990_HIES_v01_M
Producer(s)
Department of Census and Statistics
Metadata
DDI/XML JSON
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Created on
Jan 29, 2016
Last modified
Mar 29, 2019
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  • Study Description
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  • Identification
  • Version
  • Scope
  • Coverage
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  • Sampling
  • Survey instrument
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  • Data appraisal
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  • Identification

    Survey ID number

    LKA_1990_HIES_v01_M

    Title

    Household Income and Expenditure Survey - 1990-1991

    Country
    Name Country code
    Sri Lanka LKA
    Study type

    Income/Expenditure/Household Survey [hh/ies]

    Series Information

    Household Income & Expenditure Survey 1990 is the sixth in the series of surveys conducted by the Department of Census and Statistics under the National Household Survey Program.

    Income and Expenditure Survey is conducted once in every 5 years and this is the sixth in the series. The survey was conducted during the period starting from June 1990 to May 1991, in twelve monthly rounds to capture the seasonal variation of the income and expenditure pattern of the households.

    This survey provides comprehensive information on household income, individual income, household expenditure, per capita expenditure etc; which are required to study the living conditions of the different segments of the population. Additional background information on Demographic characteristics of the population was also collected.

    The data was collected by direct interviews based on a special schedule which had three sections:-

    (1) Demographic characteristics
    (2) Household expenditure (Food and Non-food items)
    (3) Household income (Monetary and Non-monetary income)

    Abstract

    This survey provides information on household income and expenditure to be able to measure the levels and changes in the living condition of the people and to observe the consumption patterns .

    Key objectives of the survey

    • To identify the income patterns in Urban, Rural and Estate Sectors & provinces.
    • To identify the income patterns by income levels.
    • Average consumption of food items and non food items
    • Expenditure patterns by sector and by different income levels.
    Kind of Data

    Sample survey data [ssd]

    Unit of Analysis

    Household, Individuals

    Version

    Version Description

    v1.0: Full edited dataset, original version for internal DPD use.

    Version Date

    2009-02-13

    Scope

    Notes

    The scope of HIES 1990/91 includes the following key sections:-

                                                1). Demographic characteristics
                                                2). Income 
                                                3). Expenditure

    Identification and demographic Information

    • Address
    • Province
    • District
    • D.S. Division
    • Name of MC/UC
    • G. N. Division
    • Name of Village
    • Name of Estate
    • Primary Sample Unit Number
    • Serial Number of Housing Unit
    • Survey Month
    • Number of households
    • Name of the Head of the household
    • Interviewer's & Supervising Office
    • Demographic Characteristics
    • Personal Information
    • Individual's economic activities ( for persons 10 and above )
    • Total land area owned and or cultivated by any member/s of household(including boarders, lodgers and servants)

    Expenditure

    • Daily consumption on Food, Drink and Tobacco
      ( Cereals, Prepared foods, Pulses, Vegetables, Leafy Vegetables, Yams & other, Meat, Fish, Dried fish, Eggs,
      Coconuts, Condiments, Other foods, Milk and milk foods, Fats and Oils, Sugar, Juggery and Treacle,
      Dried foods, Canned Fruits, Confectioner and Short eats, Beverages-Non alcoholic, Liquor, Drugs and
      Tobacco)
    • Household expenditure on Housing, Fuel and Light, Non-durable goods, Services and Consumer durables for
      main Household ( Housing, Fuel and Light, Personal care expenses, Health expenses, Transport fees,
      Maintenance of private Vehicles ,Communication, Education, Recreation entertainment, Non durable household
      goods, Household services, Clothing and Textiles, Foot wear and other personal affects, Durable household
      goods, Other expenses, Other ad-hoc expenses)
    • Expenditure on Housing, Fuel & Light, Non-durable goods, Services & Consumer durables for boarders &
      domestic servants.

    Income

    • Income from paid employment/s during last four weeks/ last calendar month
    • Income from agricultural activities - (Paddy, Other seasonal crops)
    • Income from other agricultural activities.
    • Income From Non- agricultural activities
    • Income from Other cash receipt during last calendar month / last 12 month
    • Income by Chance or ad-hoc gains during last 12 months
    • Income in kind during last calendar month
    Topics
    Topic Vocabulary URI
    consumption/consumer behaviour [1.1] CESSDA http://www.nesstar.org/rdf/common
    income, property and investment/saving [1.5] CESSDA http://www.nesstar.org/rdf/common
    land use and planning [10.2] CESSDA http://www.nesstar.org/rdf/common

    Coverage

    Geographic Coverage

    National coverage.

    Universe

    For this survey a sample of buildings and the occupants therein was drawn from the whole island

    Producers and sponsors

    Primary investigators
    Name Affiliation
    Department of Census and Statistics Ministry of Finance and Planning
    Funding Agency/Sponsor
    Name
    Government of Sri Lanka

    Sampling

    Sampling Procedure

    Sample Design
    A two stage stratified random sample design was used in this survey. Bach domain for which separate estimates were required was made a separate stratum. As such each sector (Urban, Rural, Estate) within each district was considered as a separate stratum.

    Sample Size
    In this design the first stage units (FSU) were the census blocks prepared at the 1981 Census of Population and the second stage units (SSU) were the housing units. It was decided to select 10 housing units from each selected census block. Thus, a first stage sample of about 2,500 census blocks have to be selected from the entire island.

    Sample Allocation and Method of Selection
    The allocation of 2,500 census blocks to each district was made proportional. to the square root of the population· ( as at 1981 Census ) in that district. These values have been rounded
    to multiples of twelve. ( Refer page 5 of the final report attached in the external resources section) It was decided to over sample the urban sector in each district in comparison to the rural and estate sectors with the objective of allocating roughly by one-third of the total sample.

    Allocation between the rural and estate sectors in each district was proportional to 1981 population. Within each stratum, the assigned number of FSU's were selected with probability proportionate to size (using the Census or adjusted housing unit counts ) with replacement.

    The lists of census units prepared for the Census of Population and Housing 1981, of each selected block were updated to include new ·housing units and to exclude ones which are no longer in existence. This updating operation was also staggered over a period of twelve months starting from May 1990 to April 1991. For each FSU, updating was done about one month prior to the
    scheduled interviewing.

    Deviations from the Sample Design

    Non-Response
    Of a sample of 25080 housing units selected only 19,401
    households were covered in the survey. Northern and Eastern
    provinces were excluded in the survey due to the prevailing conditions
    in the area.

    Response Rate

    Out of 19401 households 95 percent the households were fully completed while
    0.2 percent have refused.
    Sector wise completion rates show that Urban sector had 93
    percent, Rural sector 96 percent and the Estate sector 97 percent.

    Survey instrument

    Questionnaires

    Questionnaires

    The survey schedule was designed to collect data on household basis and separate schedules were used for each household (identified according to the definition of the household) within the housing units selected for the survey. The survey Schedule consists of three main sections .

                 1. Demographic section 
                 2. Expenditure
                 3.  Income

    The demographic characteristics and usual activities of the inmates belonging to the household are reported in the Demographic section of the schedule and close relatives temporarily living away are also listed in the section. Expenditure section has two sub sections to report food and non-food consumption data separately. Expenditure incurred on their own decisions by boarders and servants are recorded in the sub section under the expenditure section. The income has seven sub sections categorized according to the main sources of income.

    Data collection

    Dates of Data Collection
    Start End
    1990-06-01 1991-05-31
    Data Collectors
    Name Affiliation
    Department of Census and Statistics Ministry of Finance and Planning
    Supervision

    The field officers (statistical officers) were supervised by the personnel above them in the organization hierarchy such as Statisticians, Deputy Directors & Statisticians attach to the Sample Survey Division

    Data Collection Notes

    Field data Collection
    Data collection in the field was done by the Statistical Investigators of the Department under the direct supervision of district Statisticians/Statistical Officers.

    Data appraisal

    Estimates of Sampling Error

    Refer the pages 7 to 10 of the final report attached in the External Resources section.

    Data Access

    Access authority
    Name Affiliation URL Email
    Director General Department of Census and Statistics http//:www.statistics.gov.lk dgcensus@sltnet.lk
    Confidentiality
    Is signing of a confidentiality declaration required? Confidentiality declaration text
    yes Under the Statistical ordinance, micro data cannot be released with identifications for public use. Procedures are in place to ensure that information relating to any particular individual person, household or undertaking will be kept strictly confidential and will not be divulged to external parties. Information on individual or individual Household/establishment will not be divulged or published in such a form that will facilitate the identification of any particular person or establishment as the data have been collected under the Census/Statistical ordinance, according to which the information at individual level cannot be divulged and such information is strictly confidential.
    Access conditions

    The dataset has been anonymized and is available as a Public Use Dataset. It is accessible to all for statistical and research purposes only, under the following terms and conditions:

    1. The data and other materials will not be redistributed or sold to other individuals, institutions, or organizations without the written agreement.

    2. The data will be used for statistical and scientific research purposes only. They will be used solely for reporting of aggregated information, and not for investigation of specific individuals or organizations.

    3. No attempt will be made to re-identify respondents, and no use will be made of the identity of any person or establishment discovered inadvertently.

    4. No attempt will be made to produce links among datasets provided by the Department or among data from the Department and other datasets that could identify individuals or organizations.

    5. Any books, articles, conference papers, theses, dissertations, reports, or other publications that employ data obtained from the Department will cite the source of data in accordance with the Citation Requirement provided with each dataset.

    6. An electronic copy of all reports and publications based on the requested data will be sent to the Department

    The following rules apply to micro data released by the Department of Census and Statistics.

    • Only the requests of Government Institutions, Recognized Universities, Students, and selected international agencies are entertained. However, the Data users are required to strictly adhere to
    the terms stipulated in the agreement form.

    • All the data requests should be made to Director General (DG) of the DCS as the sole authority of releasing data is vested with the DG, DCS. DCS of Sri Lanka reserves sole right to approve or reject any data request made depending on the confidential nature of the data set and intended purpose of the study or analysis.

    • Requests for micro data should be made through the agreement form designed by DCS for this purpose (Form D.R.1). The agreement form should be filled in triplicate and the Study/project proposal should accompany the filled agreement form. If requests are made for the micro data of more than one survey, a separate agreement should be signed.

    • If the data request is from a student a letter from the respective Dept. Head/Dean/Supervisor, recommending the issue of data, should also be accompanied.

    • If the request is approved only 25% of the data file is released at the first stage. The release of the total data file is considered only after reviewing the draft report prepared on the basis of the 25% sample data file.

    • The released Data file should be used only for the specific study/Analysis mentioned in the agreement form and shall not be used for any other purpose without the prior approval of the Director General of the DCS. Moreover, Copies of the micro-data file, obtained from the DCS, shall not be given to anyone else without the prior written approval of the Director General of the DCS.

    • The draft report of the Study/Analysis should be submitted to the DCS and the concurrence of the DG, DCS, should be obtained before publishing it. Once published, a copy of the final report should be submitted to the DCS.

    [Department : The Department of Census and Statistics]
    Source : http://www.statistics.gov.lk/databases/data%20dissemination/DataDissaPolicy_2007Oct26.pdf

    Citation requirements

    "Department of Census and Statistics, Household Income and Expenditure Survey 1990-1991, Version 1.0 of the public use dataset, February 2009, provided by the National Data Archive, Data Processing Division, www.statistics.gov.lk"

    Disclaimer and copyrights

    Disclaimer

    The Department of Census and Satatistics bears no responsibility for any results or interpretations arising from the secondary use of the data.

    Copyright

    (C) 2009, Department of Census and Statistics

    Contacts

    Contacts
    Name Affiliation Email URL
    Information Unit Department of Census and Statistics information@statistic.gov.lk http//:www.statistics.gov.lk
    Sample Survey Division Department of Census and Statistics Sample.survey@statistic.gov.lk http//:www.statistics.gov.lk

    Metadata production

    DDI Document ID

    DDI_LKA_1990_HIES_v01_M

    Producers
    Name Affiliation Role
    Department of Census and Statistics Ministry of Finance & Planning Data Collection
    Date of Metadata Production

    2009-02-13

    Metadata version

    DDI Document version

    Version 2.0 (November 2015) - Adapted from DCS Version 1.0 (February 2009). ID and DDI fields changed for uploading to the World Bank microdata catalog

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