Ireland

Title: Household Budget Survey

GENERAL INFORMATION AND BASIC DEFINITIONS

1. Background

Further information is available from Central Statistics Office of Skehard Road, Mahon, Cork, Ireland, phone: 00 353 21 4535120, fax: 00 353 21 4535153, e-mail: jim.dalton@cso.ie.
Data have been collected by household survey since 1951.

2. Purpose and coverage

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

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 household unit which is characterised by:

Unit members: Usual residents temporarily living away from the dwelling are included, if away continuously for less than 6 months. Visitors (not usual residents) temporarily living in the dwelling are not included as unit members. Domestic staff living in same dwelling/compound are included in the unit. Renters living in same dwelling/compound are not included in the unit. Boarders living in same dwelling/compound are included in the unit.

Head of unit: 3.4
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 06/99 to 07/00. These data are collected in the period from 06/99 to 07/00. 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, block 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 the list of Census enumeration areas and the master sample of households respectively.5 The sample size was 7644 households or other units and 19000 interviews. The overall response rate for the survey was 55 percent. Errors/biases were minimized by using substitution for non-response.

Enumeration procedure: Enumeration uses a single round survey design in which each reporting unit is enumerated only once. The sample is divided into 3 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 have to be regular and recurring to be considered as income. Income excludes receipts resulting from the sale or reduction of assets and/or from incurring liabilities. Income excludes receipts that are not currently available to the unit.

The following receipts are collected separately:
The following receipts are collected but not separately:
The following receipts are not collected:
The following receipts are classified as income from paid employment:
The following receipts are classified as income from self-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 employment-related income:
The following receipts are classified as other income but not employment-related:
The following receipts are excluded due to measurement problems:
The following receipts are collected using the last week as the reference period:
The following receipts are collected using the last 12 months as the reference period:
The following receipts are collected using the 'last payment' and 'period covered':
The reference period for:

Income data were collected separately for each person receiving income. Components of income for an individual were collected directly from the individual. Negative values (business losses) were excluded when computing self-employment income, losses coded as zero income.

6. Expenditure data

Data collection method:
Diaries are used to collect expenditure data and are maintained for two weeks.

Diaries are used to collect expenditure on the following items:

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:6.7
Data for the following expenditure items are not collected by interview because they are collected by diary:
The following types of expenditure items are classified as 'Household consumption expenditure':
The following types of expenditure items are classified as 'Actual Household consumption':
The following types of expenditure items are classified as 'Non-consumption household expenditure':
The following types of expenditure items are classified as 'Non-household expenditure':
The following types of expenditure items are excluded due to measurement problems:
The following types of expenditure items are excluded for other reasons:

Classification: A national classification is used for classifying expenditure and has 10 separate categories at the finest level. The classification is consistent with COICOP at the Class (4 digit) level.

7. Other Data Collection Issues

The following other topics are covered:8

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 the following measures:9
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.

The responses are edited by the following:

Extreme values are retained without change. 11 Consumption of own production is included in the estimates, but in-kind receipts are not. Consumption of own production is valued using:12 the imputed by field staff using market prices.

Treatment of owner-occupied housing: Values of owner-occupied housing are not included in the total income/expenditure estimates.

Treatment of selected groups/values in analysis: Some households/units are excluded from analysis because of incomplete response. Missing values are imputed always . 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: No information was provided on samplimg errors.

Tabulation and Analysis: Statistics are presented showing averages per week 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:
Published survey reports: household Budget Survey 1999/2000 Preliminary results 25/10/01, household Budget Survey1999/2000 Final Results 04/10/02
Published methodological information: included in above

Additional statistics (or special tables on request) are available for public use, free of charge (for academia, research bodies) and with charges (for those seeking data for commercial purposes). Separate tables are published for households with wages/salaries as main source of income. Files of unidentifiable unit data are available (or available on request) for public use, free of charge and with charges (charges are only levied on those who seek the data for commercial purposes).13


(1) Normally resident children of any household member who are receiving full-time 3rd level education away from home are included as members only if they are at home for the whole of the two-week period of record keeping, for example, during their Easter, Summer or Christmas. (2) Temporary members (i.e. people who do not normally live in the household), for example, relatives home on holidays, temporary boarders would be regarde d as permanent members and thus included in the survey if they had been resident for more than 6 months prior to the first visit. (3) The concept of reference person is also used in this survey and is characterized by: "Acknowledged as such by other household/unit members", "Responsible for financial maintenance of household/unit", and/or "Main income earner". (4) The choice o f the head of household or reference person is taken by the household. Two ofher types of reference persons are defined.Firstly, the Chief Economic Supporter is the household member with the highest income. Secondly, the Principal Household Member is the p erson who actually owns the property, or in the case of a rented property, the person whose name is on the rental contract. In other cases where the household consists of non-family members, the oldest male or female is taken as the head of household. (5) A register of addresses and a separate listing exercise were also sampling frames for the Primary Sampling Unit (PSU). (6) Data for housing, other durable goods, transport costs (e.g. fuel, bus/train, taxi, repairs, vehicle purchase payments, insurance and motor taxation) and household fuel & light, are collected by referring to expenditures in last 12 months, last paym ent for that expenditure, or are collected in diaries only. (7) Transport costs, fuel, bus/train, taxi, repairs vehicle purchase payments, insurance (comments). (8) Limited information on savings is collected. Information on hire purchase, mortgage payments is collected but not on the total level of indebtedness. (9) Advertisement of Survey both at a local and national level. Information leaflets for HH on Survey (10) Treated as expenditure on capital goods wich is not included in the definition of HH expenditure. Household Budget Survey 1999/2000 Preliminary Results and Household Budget Survey Final Results 1999/2000. (11) Any extreme values encountered during the initial verification stage are referred back to the interviewer/data collector for checking purposes. If the extreme value is found to be correct, then it is retained. (12) Consumption of own production is also imputed in office-processing using market prices. (13) Anonymised data is available to bone-fide Academia and Re search Bodies from the Irish Social Science.