Sample characteristics: Thailand
| Census/survey characteristics | |
| Type | Census |
| Title | The 1970 Population and Housing Census of Thailand |
| Statistical agency | National Statistical Office |
| Population universe | All the population whose usual places of residence were in Thailand on the Census day, including Thai citizens and foreigners who had lived in Thailand for 3 months or more; all population whose usual places of residence were in Thailand but on the Census day were away for military training, sailing, or temporarily travelling abroad; and Thai civil/military/diplomatic officers and their families who normally have their offices in foreign countries. |
| De jure or de facto | De jure (except for students) |
| Census/survey day | April 1, 1970 |
| Field work period | April 2, 1970 - April 29, 1970 |
| Questionnaire | Information on household and population characteristics were collected using Enumeration Form 2, which consists of four parts. Part 1 identifies location of the household. Part 2 contains population questions that are asked of the individuals living in the household. Part 3 collects information on temporary visitors with usual residence elsewhere. Part 4 contains housing questions that are asked of private households only. |
| Type of fieldwork | Direct enumeration via house-to-house visits and personal interviews. |
| Microdata sample characteristics | |
| Sample design | Population characteristics were obtained for persons in every household while household characteristics were collected for every household in municipal areas but only for 25% of households in villages. |
| Sample fraction | 0.02 |
| Sample size (person records) | 772169 |
| Sample weights | Calculated by the NSO based on the sample design. |
| Units identified in microdata | |
| Dwellings | No |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | Yes |
| Smallest geography | District |
| Unit definitions | |
| Dwellings | Buildings or construction structures used for living, including boats, boathouses, and cars. |
| Households | A household is one person or many persons living in the same house, and these persons together seek for, consume, and utilize all facilities for a living, regardless of whether they are relatives or not. |
| Collective dwellings | Households that consist of several people living together because of certain rules or regulations indicating that these people must live together, or needed to stay together for their own benefit; these include institutions and other collective households. These people may or may not eat together. |
| Census/survey characteristics | |
| Type | Census |
| Title | The 1980 Population and Housing Census of Thailand |
| Statistical agency | National Statistical Office |
| Population universe | All Thai nationals residing in Thailand on the census date; foreign civilians who normally reside in Thailand or who temporarily reside in Thailand 3 months or more before the census date; any individual who has normally resided in Thailand but was away for military training, sailing, or temporarily travelling abroad; and Thai civil/military/diplomatic officers and their families who normally have their offices in foreign countries. |
| De jure or de facto | De jure (except for students) |
| Census/survey day | April 1, 1980 |
| Field work period | April 1980 |
| Questionnaire | The population was enumerated with Form 2. There were two types of Form 2: (i) A Short Form which was used to collect information on 11 population characteristics for every household, and (ii) a Long Form with 26 population questions and 18 housing questions. Part 1 of the Long Form identifies the household; Part 2 collects information on the individuals; and Part 3 contains housing questions which were asked of private households only. For Bangkok and all non-municipal areas, the enumeration was carried out in two stages. In stage one, private households were enumerated using the Short Form, while collective households were enumerated using the Long Form (but were not asked questions on housing characteristics). In stage two, a 20% of private households were selected for another enumeration with the Long Form. For all other municipal areas, all persons and households were enumerated using the Long Form, but collective households were not asked detailed housing questions. |
| Type of fieldwork | Direct enumeration via house-to-house visits and personal interviews. |
| Microdata sample characteristics | |
| Sample design | The sample was obtained by drawing a stratified sample of "Long Form" questionnaires. The strata were Bangkok and the four regions (Central, North, Northeastern, South) of Thailand, cross-classified by municipal and nonmunicipal areas. |
| Sample fraction | 0.01 |
| Sample size (person records) | 388141 |
| Sample weights | Calculated by the NSO based on stratified sample design. |
| Units identified in microdata | |
| Dwellings | No |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | Yes |
| Smallest geography | Province |
| Unit definitions | |
| Dwellings | Buildings or construction structures, boats, rafts, and cars used as a living place. |
| Households | A household refers to one person or many persons living in the same house. They seek for, consume, and utilize all facilities together for a living, regardless of whether they are relatives or not. |
| Collective dwellings | Households which compose of several people living together because of certain rules or regulations indicating that they must live together, or needed to stay together for their own benefit. There are two kinds: instituted households [institutions] and special households. |
| Census/survey characteristics | |
| Type | Census |
| Title | The 1990 Population and Housing Census of Thailand |
| Statistical agency | National Statistical Office |
| Population universe | All Thai nationals residing in Thailand on the census date; foreign civilians who normally reside in Thailand or who temporarily reside in Thailand 3 months or more before the census date; any individual who has normally resided in Thailand but was away for military training, sailing, or temporarily travelling abroad; and Thai civil/military/diplomatic officers and their families who normally have their offices in foreign countries. |
| De jure or de facto | De jure (except for students) |
| Census/survey day | April 1, 1990 |
| Field work period | April 1990 |
| Questionnaire | The population was enumerated with Form 2. There are two types of Form 2: (i) the Short Form which is used to collect information on 10 population questions and 3 housing questions; and (ii) the Long Form which contains 26 population questions and 16 housing questions. Part 1 of the Long Form identifies the household; Part 2 contains population questions; and Part 3 contains housing questions which are asked only of private households. One-fifth of the households and population in Bangkok and non-municipal areas were enumerated with the long-form while all households and population in the other municipal areas were enumerated with the long-form. |
| Type of fieldwork | Direct enumeration via house-to-house visits and personal interviews. |
| Microdata sample characteristics | |
| Sample design | The sample was enumerated with the Long Form questionnaires, and was selected with different sampling fractions from 9 strata. The strata are municipal and non-municipal areas in the four major regions (Central, North, Northeastern, South) with Bangkok as a separate regions. The sample was selected in a two-stage process. In the first stage, enumeration districts (EDs) were selected within each of the 9 strata. For Bangkok and other municipal areas, 40% of all EDs were selected. For non-municipal areas, 20% of EDs were selected. In the second stage, households were selected within EDs with different selection rules for private and collective households. For private households, 25% of households in Bangkok and non-municipal areas were selected, while 5% of households in other municipal areas were selected. For collective households, a 5% sample is selected across all strata. |
| Sample fraction | 0.012 |
| Sample size (person records) | 485100 |
| Sample weights | Calculated by the NSO based on stratified sample design. |
| Units identified in microdata | |
| Dwellings | No |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | Yes |
| Smallest geography | District |
| Unit definitions | |
| Dwellings | Buildings or any constructed structures including boat, houseboat, or truck in which a person can live. |
| Households | A household refers to one person or many persons who live in the same house or the same constructed structure. They seek for, consume, and utilize all facilities together for their benefit, regardless of whether they are related or not. |
| Collective dwellings | Households that consist of several people living together because of certain rules or regulations indicating that those people must live together or need to stay together for their own benefits. These includes institutions and other collective households. |
| Census/survey characteristics | |
| Type | Census |
| Title | The 2000 Population and Housing Census of Thailand |
| Statistical agency | National Statistical Office |
| Population universe | All Thai nationals residing in Thailand on the census date; foreign civilians who normally reside in Thailand or who temporarily reside in Thailand 3 months or more before the census date; any individual who has normally resided in Thailand but was away for military training, sailing, or temporarily travelling abroad; and Thai civil/military/diplomatic officers and their families who normally have their offices in foreign countries. |
| De jure or de facto | De jure (except for students) |
| Census/survey day | April 1, 2000 |
| Field work period | April 1-30, 2000 |
| Questionnaire | The population was enumerated with Form 2, which consists of three parts. Part 1 identifies the location of the household. Part 2 contains questions on population including questions on demography (S1-S16) and questions on detail of population (L17-L27). Part 3 contains housing questions that are asked of the sample private households only. Note: (i) Only Part 1 and questions on demography (S1-S16) of Part 2 in Form 2 were asked of the private households that have not been selected as sample households. (ii) For the private households that have been selected as sample private households (20%), all questions in Form 2 were asked. (iii) All collective households were enumerated using Form 2 on Part 1 (location of household) and Part 2 (questions on demography and on details of population), but questions on housing were not asked. |
| Type of fieldwork | Direct enumeration via house-to-house visits and personal interviews. |
| Microdata sample characteristics | |
| Sample design | A stratified two-stage sample was adopted. 5 strata were Bangkok and the four regions (Central, North, Northeastern, South), and each stratum was divided into municipal areas and non-municipal areas. Then, the sample was selected in two stages. In stage one, a number of sample enumeration districts (EDs) were selected systematically in each sub-stratum with sampling fraction of 1 in 20. In stage two, a sample of households was selected systematically from each sample ED as follows. For private households, one-fifth of households in each ED were selected. For collective households, one-fifth of special households and one fiftth of institutional households were selected in each sub-stratum (municipal and non-municipal areas.) |
| Sample fraction | 0.01 |
| Sample size (person records) | 604519 |
| Sample weights | Calculated by the NSO based on stratified sample design. |
| Units identified in microdata | |
| Dwellings | No |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | Yes |
| Smallest geography | District |
| Unit definitions | |
| Dwellings | Building or any construction structures including boat, houseboat, and truck at which a person can live. |
| Households | A household refers to the living one person or many persons in the same house or the same construction structure. They seek for, consume, and utilize all facilities together for their benefit, regardless of whether they are related or not. |
| Collective dwellings | Household which compose of several people living together because of having certain rule or regulation which indicated that those people must live together or needed to stay together for their own benefit. There are two kinds of collective households: institutions and other collective households [also called 'special households' in this sample] |