Denmark

Title: Forbrugsundersögelsen- Household Budget Survey 99/01

GENERAL INFORMATION AND BASIC DEFINITIONS

1. Background

Further information is available from Statistics Denmark of Sejrogade 11, DK 2100 Copenhagen, phone: 0045 39173411, fax: 0045 39173999, e-mail: bom@dst.dk.
Data have been collected by household survey since 1976. 1

2. Purpose and coverage

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

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:
Data are recorded for the consumer unit, expenditure unit or spending unit which is characterised by:

Unit members: Usual residents temporarily living away from the dwelling are not included as unit members. Visitors (not usual residents) temporarily living in the dwelling are not included as unit members. Domestic staff living in same dwelling/compound are not included in the unit. Renters living in same dwelling/compound are not included in the unit. Boarders living in same dwelling/compound are not 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 01/99 to 12/01. These data are collected in the period from 01/99 to 12/01. This survey is conducted continuously. The statistics are published annually.

SURVEY METHODOLOGY

4. Sample design

The Primary, Secondary and Ultimate Sampling Units are none, none and address 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 a register of addresses and none respectively. Primary Sampling Units (PSU) were selected using area around the interviewer's dwelling defined by administrative areas. The sample size was 3000 households or other units and 3000 interviews. The overall response rate for the survey was 62 percent.

Enumeration procedure: Enumeration uses a single round survey design in which each reporting unit is enumerated only once. No action is taken to select a smaller set of reporting units for more detailed questioning.

The addresses that should be vidited during one year are grouped into 52 weeks deciding when the interviewer tries to visit the address..

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 excludes receipts resulting from the sale or reduction of assets and/or from incurring liabilities. Income includes 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 income but not employment-related:
The following receipts are excluded for other reasons:
The following receipts are collected using the last 12 months as the reference period:

Negative values (business losses) were included when computing self-employment 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 recall only.

Data for the following expenditure items are collected by referring:
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 'Non-consumption household expenditure':
The following types of expenditure items are classified as 'Investment/liability expenditure':
The following types of expenditure items are collected on an 'acquisitions' basis:
The following types of expenditure items are collected on a 'use' basis:
The following types of expenditure items are collected on a 'payments' basis:

Classification: COICOP is used for classifying expenditure and has 1000 separate categories at the finest level.

7. Other Data Collection Issues

The following other topics are covered:

Households are not requested to indicate whether durable goods are new or second-hand when their acquisition is recorded.

Non-response: There is no substitution for non-response, whether by non-contact or by refusal.

Non-response is reduced using the following measures:
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:

4 In-kind receipts and consumption of own production are included in the estimates. In-kind receipts are valued using: tax based records Consumption of own production is valued using: the respondent's estimate.

Treatment of owner-occupied housing: Values of owner-occupied housing are included in the total income/expenditure estimates and are valued using the rental equivalent net of housing costs usually paid by owners.

The following information is used in this valuation:

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 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 not computed.

Tabulation and Analysis: Statistics are presented showing averages per year and statistics are analysed and tabulated for households and for individuals separately.

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: forbrugsundersögelsen 99/01 Analyser pä grundlag af forbrugsundersögelsen 03, february 2003
Published methodological information: forbrugsundersögelsen. Metodebeskrivelse, 1999

Additional statistics (or special tables on request) are available for public use, with charges.

Separate tables are published for the following special population groups:
Files of unidentifiable unit data are available (or available on request) for public use, with charges (for researchers under very specific conditions).


(1) In addition to a household survey, household income and expenditure data are compiled through administrative registrations. (2) Partly as an aggregate for the whole unit, and partly separately for each person receiving income. General comment about the methodogical questionnaire: The reference period used for data collection is in some cases last 12 months, and in others the calender year. (3) Interest payments on a mortgage is classified as "non-consumption h ousehold expenditure". Morgage repayments however, are not. (4) When editing, extreme values are retained without change, deleted or amen ded depending on the exact situation.