Saudi Arabia

Title: Consumer Expenditure Survey

GENERAL INFORMATION AND BASIC DEFINITIONS

1. Background

Further information is available from Central Dept. of Statistics of P.O.Box 3735 Riyadh 11481, phone: 9661 401 41 38, fax: 9661 405 94 93, e-mail: info@cds.gov.sa.
Data have been collected by household survey since 1970.

2. Purpose and coverage

The following purposes are considered to be very important or of some importance:
Lesser importance is attached to:

Geographic coverage: National with the following geographic areas excluded: remote or inaccessible areas .

Population coverage:
The following types of household are included in the data collection:
The following types of household are excluded in the data collection:

Units:
Dwelling units are used in the sample selection and are characterised by:
Data are recorded for the family unit which is characterised by:
Data are recorded for the income unit which is characterised by:
Data are recorded for the consumer unit, expenditure unit or spending unit which is characterised by:

Unit members: 1 Usual residents temporarily living away from the dwelling are not included as unit members. Visitors (not usual residents) temporarily living in the dwelling are included, if staying continuously for more than 1 months. Domestic staff living in same dwelling/compound are included in the unit. Renters living in same dwelling/compound are included in the unit. Boarders living in same dwelling/compound are included in the unit.

Head of unit:
The concept of head of household/other unit is used in this survey and is characterised by:

3. Reference periods

The time period to which income and/or expenditure statistics refer when released/published is from 10/98 to 09/99. These data are collected in the period from 10/98 to 09/99. This survey is conducted 5-yearly. The statistics are published 5-yearly.

SURVEY METHODOLOGY

4. Sample design

The Primary, Secondary and Ultimate Sampling Units are enumeration area/district, none and dwelling respectively.

Stratification:
Areas/districts were stratified using the following criteria:

The sampling frames for the Primary Sampling Unit (PSU) and Ultimate Sampling Unit (USU) were master sample enumeration area and none respectively. The overall response rate for the survey was 94 percent. Errors/biases were minimized by using an updated sampling frame.

Enumeration procedure: Enumeration uses a single round survey design in which each reporting unit is enumerated only once. The sample is divided into 12 representative sub-samples. No action is taken to select a smaller set of reporting units for more detailed questioning.

DATA COLLECTION, CONCEPTS, DEFINITIONS AND CLASSIFICATIONS

5. Income data

Income data are collected. Receipts do not have to be regular and recurring to be considered as income. Income includes receipts resulting from the sale or reduction of assets and/or from incurring liabilities are included in income. Income excludes receipts that are not currently available to the unit.

The following receipts are collected but not separately:5
The following receipts are not collected:5
The following receipts are classified as income from paid employment:
The following receipts are classified as property income:
The following receipts are classified as transfer income but not employment-related:
The following receipts are classified as other income but not employment-related:
The following receipts are collected using the last 12 months as the reference period:

Income data were collected separately for each person receiving income. Components of income for an individual were collected from one person who reported for all individuals. Negative values (business losses) were excluded when computing self-employment income.

6. Expenditure data

Data collection method:
Diaries are used to collect expenditure data and are maintained for one week. 2

Diaries are used to collect expenditure on the following items:3

Interviews are used to collect expenditure data with the respondent completing the interview by a mix of recall and using documentation.

Data for the following expenditure items are collected by referring:4
The following types of expenditure items are classified as 'Household consumption expenditure':
The following types of expenditure items are classified as 'Actual Household consumption':

Classification: A national classification is used for classifying expenditure and has 8 separate categories at the finest level. The classification is consistent with COICOP at the Division (2 digit) level.

7. Other Data Collection Issues

The following other topics are covered:

Households are requested to indicate whether durable goods are new or second-hand when their acquisition is recorded.

Non-response: Non-response households (refusals and non-contacts) are substituted.

Non-response is reduced using more than one repeat visits.
Reporting errors are reduced using the following measures:

DATA PROCESSING, ANALYSIS AND DISSEMINATION

Answers are pre-coded on data collection forms to the extent possible.6

The responses are edited by the following:

Extreme values are amended. Consumption of own production is included in the estimates, but in-kind receipts are not.

Treatment of owner-occupied housing: Values of owner-occupied housing are included in the total income/expenditure estimates and are valued using the current market value.

The following information is used in this valuation:

Treatment of selected groups/values in analysis: No households/units are excluded from analysis because of incomplete response. Missing values are by either retained without change or imputed, depen ding on the missing value in question. Supplementary sources are not used to adjust estimates for under- or over-reporting. No groups are excluded from data analysis.

Weighting:
Weighting factors are used to adjust for:

Sampling errors: Sampling errors are computed for Total Income/Expenditure aggregates only and these sampling errors are available on request.

Tabulation and Analysis: Statistics are presented showing averages per month and statistics are analysed and tabulated for households only.

The following classifications are used for tabulation and analysis of income statistics:
The following classifications are used for tabulation and analysis of expenditure statistics:

Documentation and Dissemination:

Separate tables are published for households with wages/salaries as main source of income. Files of unidentifiable unit data are not available (or available on request) for public use.


(1) All persons living in the dwelling during the survey month are included as unit members. (2) And one month. (3) Diaries are not used to collect expenditure on alcohol. (4) Data on clothing and footwear expenditure are also collected by referring to expen ditures in the last month. (5) In some cases the following receipts are also classified as income from self-employment: Wages & Salaries, Cash bonuses & gratuities, Commissions and tips, Remuneration for time not worked, Termination and redundancy payments, Employer social security contributions, and Employee social security contributions. (6) The remaining answers are coded by office staff. (7) Imputed using market prices; depending on the item either by field staff or in office processing.