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Population Change survey

Social Statistics Division, Population and Housing Statistics Branch, Population and Housing Census Section
Tel: (66)(2) 281-0333 ext. 1903 Fax: (66)(2) 282-5861
Director: social@nso.go.th

The National Statistical Office has been in Charge of undertaking Survey of Population Change every ten years. The first Survey of Population Change was undertaken in 1964 - 1966, the subsequent second and the third surveys were conducted in 1974 - 1976 and 1984 - 1986 respectively, in order to measure change in the population growth and its component for the intercensal period, as well as to estimate the completeness of the births and deaths registration. The fourth and the fifth Survey of Population Change were conducted in 1989 and 1991 in order to obtain estimates of the rate of population growth and other population characteristics as well as to evaluate the target of population growth rate in the mid and the end of the Sixth National Economic and Social Development Plan (1987 - 1991). The Sixth Survey of Population Change was started in 1995 and completed in 1996.

Summary tables

Table 1 Crude Birth rate, Crude Death rate and National growth rate by region : Survey of Population Change 1995 - 1996, 1991, 1985 - 1986.
Table 2 Total fertility rate by region 1995 - 1996, 1991, 1985 - 1986
Table 3 Crude Death rate, Infant and under 5 mortality rate, by sex : Survey of Population Change 1995 - 1996, 1991 - 1986
Table 4 Infant mortality rate by region and year of survey.
Table 5 Expectation of life at birth from Survey of Population Change.

The objective of the 1995 - 1996 Survey of Population Change were :

  1. To obtain the estimate of birth and death rates, and population growth rate
  2. To provide current and accurate data on fertility, mortality, and family planning such as the fertility rate, infant mortality rate, expectation of life at birth and family planning practice etc.
  3. To obtain estimate of the population growth rate at the end of the Seventh National Economic and Social Development Plan (1992 - 1996) and to provide reliable data essential for population projections
  4. To provide data on changes in demographic characteristics in the mid - decade period

This survey was covered all households in the sample enumeration districts / villages in all provinces of the country. Methodology
This survey was adopt Sample Survey Method. A Stratified One-Stage Sampling was adopted for the survey Bangkok Metropolis and group of provinces in each region were constituted strata. There were altogether 5 strata. Each stratum was divided into two parts according to the type of local administration, namely, municipal areas and non-municipal areas. The sample selection of blocks / villages were performed separately and independently in each part by using systematic method. The total number of sample blocks / villages for enumeration covered 600 sample.

Collection data Method

Enumerators went to interviewed in each household. Persons enumerated in the first rounds of the survey were treated as the base population and the other rounds the enumerated households would be interviewed only for events i.e., birth, deaths and change of characteristics that occured during the previous 3 months.

Items of Population Change Survey

  1. Accurate data on demographic characteristics such as month and years of birth, age, sex, relationship to head of household, education, occupation, marital status children ever-born and living children, contraception and pregnancy.
  2. Event of birth such as place of birth, birth registration, new born baby identification, name and surname of parent.
  3. Event of death such as rate of death, place of death, caused of death, death registration, death certificate number.
  4. Migration
Period of the collection data.

This survey is a continuous one of five consecutive rounds, with 3 months interval between each round. The first round carried out the data were collected during July 1 to August 15, 1994, the second during October 1994, the third during January 1995, the fourth during April 1995, and the fifth during July 1995

Report Publication

The survey results was divided into two publications. The first publication presented the population characteristics such as number of population by age group, sex, education, occupation, work status, marital status, children ever-born, living children and contraceptive. The survey results are presented classified by region and whole kingdom.
The second publication presented demographic statistics such as birth rate, death rate., the rate of population growth, fertility, mortality, infant and under 5 mortality rates, expectation of life at birth by region and whole kingdom.