The main purpose of the Viet Nam Migration Survey 2004 is to supplement the lack of current understanding about the migration relating to migration decision and results of the different types of moves by migration streams and their relations to regional and national development schemes. Information collected from the survey will form a supplement information source to other available sources (censuses, surveys), and at the same time, provide detailed data on other aspects of the migration process, which are not available at other sources.
The survey focuses on: (a). Model, some streams and types of migration; (b). Cause and results of those moves; (c). Characteristics, including attitude, awareness of the surveyed population in relation to their moves; (d). Characteristics on reproductive health; (e). Those information will be collected for non-migrants in order to find out social-economic differences between migrants and non-migrants. Specifically, the survey aims to the collection of the following data:
· Process of migration including decision of move, number of moves, and process of settling their life in and looking jobs;
· Socio-economic and demographic factors and facilitating factors of migration;
· Consequences of movement of migrants and their family in terms of:
- income and employment
- living conditions and housing
- access to social and health services
- life satisfactions and recreation
- adaptation and attitude change
· Comparison of situation of migrants and non-migrants in the destination areas
· Develop policy recommendations on rural development to prevent out-migration, on regional development to divert migration streams to other regions, on information programs to assist those who wish to move, and on health and social services to assist migrants in their adjustment and integration at destination areas.
Kind of Data
Sample survey data [ssd]
Unit of Analysis
Version 01: Basic raw data, obtained from data entry (before editing)
The survey covered the following topics:
- Demographic characteristics of the household
- Housing conditions, availability of amenities, expenses on food, access to school
- Migration history, details of last move, activities and current living condition, health, and STDS, AIDS and family planning
- Non-migrant information
Population & Reproductive Health
The survey covered the following areas:
Area 1: Hanoi
Area 2: Northeast economic zone, including Hai Phong, Hai Duong, and Quang Ninh
Area 3: Central Highlands, including Gia Lai, Dak Lak, Dak Nong, and Lam Dong
Ho Chi Minh City
Industrial zone of Binh Duong, and Dong Nai
Household: includes one or more than one persons, having common dwelling and sharing food.
Usual residents: are persons who usually live and have food in the household; or persons recently have moved into the household and stayed stably there for one month or more, regardless of the fact that they have or have not been registered by police office.
Definition of migrants:
Including those who are in the age group 15-59 and moved from one district to another within the five years before the survey, and not less than one month. For 3 cities: Hanoi, Hai Phong and Ho Chi Minh, those who moved from one quarter to another within a city are not covered by this definition.
Migration here is the internal migration of the Vietnamese people.
Including those who are in the age group 15-59 and not determined as migrants.
Producers and sponsors
General Statistics Office
Ministry of Planning and Investment
The Government of Vietnam
In total, about 10,000 individual interviews will be conducted, including 5,000 migrants and 5,000 non-migrants. All of them will be in the age group 15-59. To ensure a complete obtainment of the above-targeted number of interviews, it is important to have a good preparation, helping in the determination of enumeration areas with highest migration rates.
The extent to which the sample can be generalized is limited. The main objective of the survey was to understand migration and differentials among migration types, and the survey was not intended to provide estimates that were representative of any clearly defined geographical area. For the five main areas including in the sample design, selection of respondents was not undertaken on the basis of equal probability of selection, either between or within the areas. Furthermore, information is not available to construct sampling weights that would adjust for the unequal probability of selection. Therefore the results for each area should not be interpreted as representing the populations of those areas.
To ensure sufficient representation of different types of migrants, defined here in terms of household registration status, the sampling scheme concentrated on those areas that had the highest proportions of temporary migrants. This means that the results are most likely to represent the areas that are the destinations of high numbers of temporary migrants. Because the non-migrant sample was drawn from the same areas as the migrants, the non-migrants do not represent a cross-section of non-migrants. Rather, they represent non-migrants living in areas that attract large numbers of temporary migrants.
Dates of Data Collection
Data Collection Mode
Interviewing was conducted by teams of interviewers. Each interviewing team comprised of 3-4 female interviewers, a field editor and a supervisor.
Data Collection Notes
Staff from the district statistical offices and provincial statistical offices were recruited to work as team supervisors, editors and interviewers, and officers from the Department of Population and Labour Statistics of the General Statistical Office were involved in the fieldwork operation as central supervisors. Twenty enumeration teams were evenly divided among the five areas, resulting in four teams in each area. Each team comprised five persons, with one supervisor, an editor and three interviewers. The fieldwork commenced upon completion of the fieldworker training. The fieldwork lasted for a period of nine weeks. Fieldwork was completed at the beginning of November 2004, with the exception of Dong Nai and Ho Chi Minh City where there were some delays due to the pressure of work at the provincial level.
During the fieldwork, the central level supervisors undertook fieldtrips to a range of localities to supervise and help the survey team. The completed questionnaires were handed over regularly to the Central Office with a 20-day interval for office editing and data entry. Based on the office editing and reports from central supervisors, instructions were sent to survey teams in order to overcome errors or problems that occurred during the fieldwork operation.
District statistical offices
General Statistics Office
The survey uses 3 kinds of questionnaire:
1) A household questionnaire was administered in each household, which collected various information on household members including
- Identification information
- Information on each of household members: relationship to household head, sex, age and questions used to identify household with migrants or non-migrants;
- Questions for the household as a whole: housing, electricity for lighting, possession of TV, radio, toilet facility, expenses for food, main income source, time to the nearest primary school, secondary school and hospital.
2) A Migrant questionnaire includes:
- Part 1: Used to collect information on characteristics of the respondent, such as age, sex, marital status, education level and access to mass media;
- Part 2: Used to collect information on the migration history, such as place of birth, place of residence at age 15, number of moves, and access to urban centre;
- Part 3: Used to collect information on last move, such as the place of residence before the move, reasons of move, decision making process to move, persons accompanying migrant, assistance received, knowledge and utilization of job introduction agency, time for looking for work, difficulties faced, residence registration, and remittances;
- Part 4: Used to collect information on current activity and living conditions, such as: activity status, occupation, industry, time of work, income, expenses, savings, access and use of health services, access to education of children, participation in mass organization activity, and security;
- Part 5: Used to collect information on health, health care, cigarette smoking and alcohol drinking;
- Part 6: Used to collect information on HIV/AIDS, sexual transmitted infections and family planning.
3) A Non - migrant questionnaire:
- Except for the exclusion of Part 3, the content of the Form C questionnaire was similar to that of Form B.
The data-entry programme was developed in CSPRO25 to ensure proper validation of the entered data. The program provided value and range checks of the variables, skip patterns, and relationship checks among designated variables. During data entry, the programme prompted data entry personnel to check the entered value against the value in the questionnaire when inconsistencies were located. Two kinds of prompts were programmed: i). A warning prompt that meant that if the entered value was confirmed the warning could be ignored; ii). A confirmatory prompt that would not allow data to be entered. In the case of a confirmatory prompt, data entry personnel were required to discuss the problem with staff of the Department of Population and Labour Statistics before the prompt could be over-ridden. The migrant household and non-migrant household used the same data-entry programme and have the same data structure.
The data-entry management programme was written in Visual FoxPro. It ensured that data entry and editing worked smoothly and efficiently. This programme was used to monitor survey units and quality of questionnaires; to manage the user data-entry programme; to provide authorization for use of data; to protect against duplication or missing questionnaires in comparison with the selected sample; and to manage data in the LAN environment. It is the interface between the system, data entry personnel and users.
All data from the survey were double-keyed in order to reject errors that occurred in the data-entry operation. For data-entry, supervisors and officers from the Department of Population and Labour Statistics were responsible for checking data-entry, to help data-entry personnel resolve error prompts, and to correct questionnaires in cases that mistakes occurred, or where the data was not logical.
Data files were generated separately for each survey instrument. Data files were then converted into SPSS files, which were used for the preparation of this report and which will be provided for those persons involved in the planned in-depth analysis.
Deputy Director General
General Statistics Office
Population and Labour Department
Confidentiality of respondents is guaranteed by the General Statistics Office of Vietnam.
Before being granted access to the dataset, all users have to formally agree:
1. To make no copies of any files or portions of files to which s/he is granted access except those authorized by the data depositor.
2. Not to use any technique in an attempt to learn the identity of any person, establishment, or sampling unit not identified on public use data files.
3. To hold in strictest confidence the identification of any establishment or individual that may be inadvertently revealed in any documents or discussion, or analysis. Such inadvertent identification revealed in her/his analysis will be immediately brought to the attention of the data depositor.
The GSO official microdata access policy is available on its website: http://www.gso.gov.vn
Requests for access to the datasets can be made through the GSO website.
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 of the General Statistics Office of Vietnam.
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. Any such discovery would immediately be reported to the Department of Agriculture, forestry and fishery Statistics of General Statistics Office of Vietnam.
4. No attempt will be made to produce links among datasets provided by the General Statistics Office of Vietnam, or among data from the National Data Archive 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 GSO 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 General Statistics Office of Vietnam.
The original collector of the data, the General Statistics Office of Vietnam, and the relevant funding agencies bear no responsibility for use of the data or for interpretations or inferences based upon such uses.
Use of the dataset must be acknowledged using a citation which would include:
- the Identification of the Primary Investigator
- the title of the survey (including country, acronym and year of implementation)
- the survey reference number
- the source and date of download
General Statistics Office, Vietnam. Viet Nam Migration Survey 2004. Ref. VNM_2004_VMS_v01_M. Dataset downloaded form http:// www.gso.gov.vn on [date].
Disclaimer and copyrights
The Viet Nam General Statistics Office provide these data to external users without any responsibility implied for the resulting or statements from the use of these data.
DDI Document ID
General Statistics Office
Population an Labour Department
Design and organize this survey
Accelarated Data Program
International Household Survey Network
Editing for the IHSN Survey Catalog
Date of Metadata Production
DDI Document version
Version 01: Adopted from "DDI_VNM_2004_MS_v01_M" DDI that was done by metadata producers mentioned in "Metadata Production" section.