Household Income and Expenditure Survey 2008
Samoa, 2008
Identification
WSM_2008_HIES_v01_M
Household Income and Expenditure Survey 2008
| Name | Country code |
|---|---|
| Samoa | WSM |
Income/Expenditure/Household Survey [hh/ies]
The 2008 Household Income and Expenditure Survey (HIES) is the third such survey conducted by the Samoa Bureau of Statistics since the first one in 1997.
The 2008 HIES collects information on Income and Expenditure of each sampled household in order to provide information on the economic characteristics of all households in Samoa. The main objectives of this survey are:
- To adjust the weights of the Consumer Price Index (CPI) using the household expenditure pattern of Samoan households and
- To provide data to determine the extent of hardship and the vulnerability of households in Samoa
This undertaking was funded by the Government of Samoa, with technical assistance provided by the Asian Development Bank through the services of Mr. David Abbott
Sample survey data [ssd]
- Households
- Individuals
Scope
- Household Identification Particulars
- Household Demographic Characteristics
- Wages and salaries
- Self employment and other Business Activities
- Previous Jobs
- Pensions/Welfare Benefits
- Other Income
- Loan Information
- Contribution to Benefit Scheme
- Dwelling Characteristics
- Household Possession
- Dwelling Tenure
- Construction and Improvements of Dwelling
- Household Bills
- Transport Expenses
- Acquisition of Major Durables
- Education, Recreation, and Sport
- Medical and Health Expenses
- Overseas Travel
- Special Events
- Agriculture, Livestock, Fishing, and other Sales
- Household Consumption and Expenditure
Coverage
National
Producers and sponsors
| Name | Affiliation |
|---|---|
| Bureau of Statistics | Government of Samoa |
| Name | Role |
|---|---|
| Asian Development Bank | Technical assistance |
| Name | Role |
|---|---|
| Government of Samoa | Funding |
Sampling
Survey Methodology
The sampling technique used for the 2008 HIES is a stratified single stage cluster design. The first stage involved the selection of the Enumeration Area (EA) using Probability Proportional to Size (PPS) while the second stage involved the selection of a fixed cluster size.
To achieve a 10% sample of households, every tenth household was selected with a cluster size of 10 for North West Upolu, Rest of Upolu, and Savaii, and a cluster size of 5 for Apia Urban Area. Due to some variation in the number of households since the last population census in 2006 in which the frame was based, and the 2008 situation, the proportions of sampled households in the frame does not come to the required sample size.
Weights
- Apia Urban Areas – 13.879960
- North West Upolu – 12.177931
- Rest of Upolu – 11.597364
- Savaii - 12.680927
Only those cases or households with Interview Status = 1 (completed) have weights.
Survey instrument
The 2008 Household Income and Expenditure Survey questionnaire consists of four forms:
i) Household Control Form
ii) Household Form
iii) Individual Questionnaire
iv) Diary
Data collection
| Start | End |
|---|---|
| 2008-08 | 2008-09 |
The field work was organized in two rounds. From 4 to 31 August 2008, half of the selected households were enumerated. The other half of the selected households was enumerated from 1 to 28 September 2008.
Data appraisal
Accuracy and reliability of estimates in a survey such as HIES are measured by computing the sampling errors, specifically standard errors and coefficient of variations. Although survey estimates are subject to both sampling and non sampling errors, only sampling errors can be calculated. Non sampling errors are minimized by means of quality control and operational control measures in all phases of the survey. In practice, estimates with coefficient of variations (CV) of less than 20% are considered as statistically ‘accurate’. On the other hand, those estimates with (CV) more than 20% are ‘indicative’ and should not be used at face value.
Note: Standard errors and coefficient of variation for key variables are presented in Appendix 2 of the 2008 HIES final report.
Contacts
| Name | Affiliation | |
|---|---|---|
| Carolina Diaz-Bonilla | GPVDR | cdiazbonilla@worldbank.org |
Metadata production
DDI_WSM_2008_HIES_v02_M
| Name | Affiliation | Role |
|---|---|---|
| Development Economics Data Group | The World Bank | Ducumentation of the DDI |
2012-03-21
Metadata version
Version 02: (December 2015): Adaptation of Version 01 (March 2012). Data, UNDP report and questionnaires - provided by GPVDR team.