Demographic Survey - 1994
Sri Lanka, 1994
Reference ID
LKA-DCS-DS-1994-v1.0
Producer(s)
Department of Census and Statistics
Metadata
Created on
Jan 05, 2023
Last modified
Jan 16, 2023
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Identification
Survey ID Number
LKA-DCS-DS-1994-v1.0
Title
Demographic Survey - 1994
Country
| Name | Country code |
|---|---|
| Sri Lanka | LKA |
Study type
Other Household Survey [hh/oth]
Series Information
A National Census of Population and Housing could not be ventured due to the disturbances in the Northern and eastern Provinces. Hence the Dept of Census and Statistics has decided to conduct an island-wide large scale demographic survey (excluding the Northern and Eastern Provinces) during the year 1994 to satisfy the urgent needs of the data users, with a view to furnish estimates at Divisional Secretariat, District, Provincial and National levels.
Abstract
A National Census of Population and Housing could not be ventured due to the disturbances in the Northern and eastern Provinces. Hence the Dept of Census and Statistics has decided to conduct an island-wide large scale demographic survey (excluding the Northern and Eastern Provinces) during the year 1994 to satisfy the urgent needs of the data users, with a view to furnish estimates at Divisional Secretariat, District, Provincial and National levels.
Kind of Data
Sample survey data [ssd]
Unit of Analysis
Housing Unit
A housing unit has been defined as a place of residence:
1. which is separate from other places of residence, ie where there are walls or partitions separating it so that the persons occupying it can live separately from other persons in the building or in the locality and 2. which has independent access.
Living Quarters other than housing units
Building or a group of buildings where a number of persons (generally not related to one another) reside under the supervision of a central authority, eg convents, school, hostels, police barracks, boarding houses etc
Non Housing unit
Every building or part of a building which is not a place of residence and does not form part of a housing unit is regarded as a non-housing unit.
Household
A household may be (a) a one person Household or (b) a multi-person household
A one person household is one where a person lives by himself and makes separate provision for his food (either cooking it himself or purchasing it)
A multi person household is a group of two or more persons live together and have a common arrangement for cooking and partaking of food (in short, living and eating together). The household includes not only members of the family but also others who live with the family and share meals with them such as relatives boarders servants. The members of a household could be unrelated.
In the case of lodgers living with a household and having their own arrangements for meals, each lodger should be treated as a separate household. But boarders who share meals with the household should be treated as members of the household.
a housing unit may consist of one or more households.
A housing unit has been defined as a place of residence:
1. which is separate from other places of residence, ie where there are walls or partitions separating it so that the persons occupying it can live separately from other persons in the building or in the locality and 2. which has independent access.
Living Quarters other than housing units
Building or a group of buildings where a number of persons (generally not related to one another) reside under the supervision of a central authority, eg convents, school, hostels, police barracks, boarding houses etc
Non Housing unit
Every building or part of a building which is not a place of residence and does not form part of a housing unit is regarded as a non-housing unit.
Household
A household may be (a) a one person Household or (b) a multi-person household
A one person household is one where a person lives by himself and makes separate provision for his food (either cooking it himself or purchasing it)
A multi person household is a group of two or more persons live together and have a common arrangement for cooking and partaking of food (in short, living and eating together). The household includes not only members of the family but also others who live with the family and share meals with them such as relatives boarders servants. The members of a household could be unrelated.
In the case of lodgers living with a household and having their own arrangements for meals, each lodger should be treated as a separate household. But boarders who share meals with the household should be treated as members of the household.
a housing unit may consist of one or more households.
Version
Version Description
v1.0 : Full edited dataset, for internal DPD use.
Version Date
2008-07-07
Scope
Notes
Household Identification:
District, DS division, GN Division, Sector (urban/rural/estate), MC/UC, Ward, Village, Estate, PSU No, Housing Unit No within PSU, Household No, Household Category(Main/Other), No of persons in the H/hold, Month Year of Survey
Person Information:
Name, Relationship to head of h/hold, Sex, Birth year/month, Age, Religion, Ethnicity, School attendance, Level of Education, Reading/writing/speaking ability, Marital status, Last week's activity, Principal occupation, Principal industry/economic sector, Employment status, Reason for unemployment, Period of stay in the usual residence, Previous place of residence, Reason for moving to present residence, Reason for going abroad, country of destination, expected duration of stay
Housing and basic amenities
No of h/holds in the housing unit, Principal material of construction, Year of construction, Number of rooms, Tenure, Availability of toilet and type, Main source of drinking water, principal type of lighting, type of cooking fuel.
District, DS division, GN Division, Sector (urban/rural/estate), MC/UC, Ward, Village, Estate, PSU No, Housing Unit No within PSU, Household No, Household Category(Main/Other), No of persons in the H/hold, Month Year of Survey
Person Information:
Name, Relationship to head of h/hold, Sex, Birth year/month, Age, Religion, Ethnicity, School attendance, Level of Education, Reading/writing/speaking ability, Marital status, Last week's activity, Principal occupation, Principal industry/economic sector, Employment status, Reason for unemployment, Period of stay in the usual residence, Previous place of residence, Reason for moving to present residence, Reason for going abroad, country of destination, expected duration of stay
Housing and basic amenities
No of h/holds in the housing unit, Principal material of construction, Year of construction, Number of rooms, Tenure, Availability of toilet and type, Main source of drinking water, principal type of lighting, type of cooking fuel.
Coverage
Geographic Coverage
National coverage (excluding Northern and Eastern Provinces)
Universe
The population living in housing units alone were selected for the survey. Institutional population such as those who are living in barracks, hostels etc has not been encompassed. Accordingly, the estimates reflect a coverage confined to the institutional population who were accounted for 2.3% of the entire population in Sri Lanka in 1981 which could be considerably higher at present. Nontheless the household definition has been modified to incorporate all the households without an upper limit for boarders and lodgers. Therefore the data user should note this distinction of population when comparing with other data.
Producers and sponsors
Primary investigators
| Name | Affiliation |
|---|---|
| Department of Census and Statistics | Ministry of Finance and Planning |
Funding Agency/Sponsor
| Name | Abbreviation | Role |
|---|---|---|
| Ministry of Fisheries and Aquatic Resources | DCS | Source of funds |
Sampling
Sampling Procedure
A sample of 92,180 housing units distributed in the island barring Northern and Eastern Provinces was picked for this survey. Stratification was done at sectoral level and all the Divisional Secretary areas were taken as domains. A minimal samples of 300 housing units were selected from each DSD in order to give estimates at these levels. Percentage of Urban housing units in the country was 13% and the balance 87% represented the Rural housing units. When allocating the total sample into these two sectors however Urban (MC UC sector) was over sampled because this sector is more heterogeneous in terms of the characteristics, which were to be collected through this survey. As such at national level 21360 housing units (23%) were allocated to Urban sector and 70820 housing units (77%) were allocated to Rural sector.
A stratified two stage sample design was used with GN Division or part of the GN Division as primary sampling unit (PSU) and housing unit as the secondary sampling unit (SSU) in the rural sector. Rural sector covers about 219 DS Divisions. 3541 PSU's were selected from this sector and 20 housing units selected from each selected PSU.
Urban sector covered all the Municipal Councils and urban Councils in the island (excl North and east). A stratified three stage sample design was adopted with PPS selection of Wards and subsequent selection of a part of Ward as PSU and the housing unit as the final sampling unit were done. About 40% of the wards in each MC/UC was selected as PPS with replacement. Thereafter SSU's were selected from each selected ward. Finally 40 housing unit's were selected from each selected PSU. The Urban Sector represents 10 MCs and 32 UC's in 42 Divisional Secretariat Divisions.
A stratified two stage sample design was used with GN Division or part of the GN Division as primary sampling unit (PSU) and housing unit as the secondary sampling unit (SSU) in the rural sector. Rural sector covers about 219 DS Divisions. 3541 PSU's were selected from this sector and 20 housing units selected from each selected PSU.
Urban sector covered all the Municipal Councils and urban Councils in the island (excl North and east). A stratified three stage sample design was adopted with PPS selection of Wards and subsequent selection of a part of Ward as PSU and the housing unit as the final sampling unit were done. About 40% of the wards in each MC/UC was selected as PPS with replacement. Thereafter SSU's were selected from each selected ward. Finally 40 housing unit's were selected from each selected PSU. The Urban Sector represents 10 MCs and 32 UC's in 42 Divisional Secretariat Divisions.
Response Rate
Estimates given in the publication - Demographic Survey 1994 Sri Lanka - Feb 1996 - are subject to standard sampling errors due to enumeration of only selected housing units representing the population. An account of non sampling error is also not readily available for reference.
an adjustment for non-response and coverage errors have been done while inflating the data.
an adjustment for non-response and coverage errors have been done while inflating the data.
Data Collection
Dates of Data Collection
| Start | End |
|---|---|
| 1994-09-15 | 1994-09-30 |
Data Collection Mode
Face-to-face [f2f]
Supervision
Department of Census and Statistics Staff
Data Collection Notes
The survey was carried out in three stages.
Mapping of all the selected sample areas
Listing of all the selected PSU's
Enumeration of selected households
The first two stages were conducted by the Census Division of the DCS, and the final stage was conducted by the Sample survey Division of the DCS.
At the priliminary stage, sketch maps of the selected GN Divisions (approx 3540) in the rural areas were prepared by the respective GN's and the selected wards (approx 535) in the Urban areas were prepared by the officers of this Dept.
Once the preparation of these maps were completed, the primary Sampling Units were identified and listed to include the buildings. This list served as the basic sampling frame for the selection of Secondary sampling Units. This listing operation was done in the rural areas by officers selected by the Divisional secretary on the recommendation of the Grama Niladhari of the respective Division.
Mapping of the selected areas commenced in March 1994 and the listing operation followed. During the third stage, the proper survey was carried out from 15th to 30th of September 1994.
Mapping of all the selected sample areas
Listing of all the selected PSU's
Enumeration of selected households
The first two stages were conducted by the Census Division of the DCS, and the final stage was conducted by the Sample survey Division of the DCS.
At the priliminary stage, sketch maps of the selected GN Divisions (approx 3540) in the rural areas were prepared by the respective GN's and the selected wards (approx 535) in the Urban areas were prepared by the officers of this Dept.
Once the preparation of these maps were completed, the primary Sampling Units were identified and listed to include the buildings. This list served as the basic sampling frame for the selection of Secondary sampling Units. This listing operation was done in the rural areas by officers selected by the Divisional secretary on the recommendation of the Grama Niladhari of the respective Division.
Mapping of the selected areas commenced in March 1994 and the listing operation followed. During the third stage, the proper survey was carried out from 15th to 30th of September 1994.
Questionnaires
Questionnaires
The survey questionnaire is similar to which is usually administered in the Census of Population and Housing with few exceptions. Housing questions were filled only in the schedule of the main household of the housing unit. The information as collected in the Housing Section (H1-H.13) has been processed in order to tabulate the housing data.
Data Processing
Data Editing
Standard Data editing process of DPD/DCS
Other Processing
Housing Tables
In order to make available required tabulations to data users speedily, it has been decided to release the frequencies of the important characteristics on Housing as a first step.
Computer data entry, editing and tabulation operations have been completed before arriving at these estimates.
In order to make available required tabulations to data users speedily, it has been decided to release the frequencies of the important characteristics on Housing as a first step.
Computer data entry, editing and tabulation operations have been completed before arriving at these estimates.
Access policy
Contacts
Confidentiality
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 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 of the DCS. The 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 of the 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 (DCS)]
Source : http://www.statistics.gov.lk/databases/data%20dissemination/DataDissaPolicy_
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 of the DCS. The 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 of the 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 (DCS)]
Source : http://www.statistics.gov.lk/databases/data%20dissemination/DataDissaPolicy_
Citation requirements
Department of Census and Statistics, Sri Lanka Demographic Survey 1994 [DS 1994], Version 1.0 of the public use dataset July 2008, provided by the National Data Archive, Data Processing Division, www.statistics.gov.lk"
Access authority
| Name | Affiliation | URL | |
|---|---|---|---|
| Director General | Department of Census and Statistics | dgcensus@sltnet.lk | Link |
Disclaimer and copyrights
Disclaimer
The Department of Census and Statistics bears no responsibility for any results or interpretations arising from the secondary use of the data.
Copyright
(c) 2008, Department of Census and Statistics
Metadata production
DDI Document ID
DDI-LKA-DCS-DS-1994-v1.0
Producers
| Name | Abbreviation | Affiliation | Role |
|---|---|---|---|
| Department of Census and Statistics | DCS | Ministry of Finance and Planning | Documentation of Data |
Date of Metadata Production
2008-07-07
DDI Document version
Version 1.1 (July 2008)