Finland

Title: Income Distribution Survey 2000

GENERAL INFORMATION AND BASIC DEFINITIONS

1. Background

Further information is available from Statistics Finland of Statistics Finland, FIN-00022 Statistics Finland, phone: 358 9 1734 3680, fax: 358 9 1734 3264, e-mail: veti-matti.tormalehto@stat.fi.
Data have been collected by household survey since 1977. 1

2. Purpose and coverage

The following purposes are considered to be very important or of some importance:2
Lesser importance is attached to:2

Geographic coverage: National without any specific geographic areas excluded.

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: 3 Usual residents temporarily living away from the dwelling are included, if away continuously for less than months. 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.

Head of unit: 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 01/00 to 12/00. These data are collected in the period from 01/01 to 02/02.5 This survey is conducted annually. The statistics are published annually.

SURVEY METHODOLOGY

4. Sample design

The Primary, Secondary and Ultimate Sampling Units are none, none and household respectively.

Stratification:
Households/Consumption Unit, Income Unit, Family Unit were stratified using the following criteria:

The sampling frames for the Primary Sampling Unit (PSU) and Ultimate Sampling Unit (USU) were a set of administrative registers (or combination of such registers) and none respectively. Primary Sampling Units (PSU) were selected using probability proportional to size. The sample size was 10423 households or other units and 10423 interviews. The overall response rate for the survey was 17 percent. Errors/biases were minimized by using an updated sampling frame, an increased sample size.

Enumeration procedure: Enumeration uses a panel design in which each reporting unit is enumerated more than once. The sample is not divided into representative sub-samples. The panel has an expected lifetime of 2 years, and each reporting household/unit is enumerated 2 times in total. If a reporting household/unit drops out from the panel, it is abandonned. If changes occur in composition of the reporting household/unit during the lifetime of the panel, then it continues in the panel. No action is taken to select a smaller set of reporting units for more detailed questioning.

Two-year rotating panel. Each household is in the sample for two consecutive years. Every year half of the total sample changes, i.e. old panel is dropped and a new two-year panel begins..

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 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 employment-related transfer income:
The following receipts are classified as transfer income but not employment-related:
The following receipts are excluded for other reasons:
The reference period for:

Negative values (business losses) were excluded when computing self-employment income.

6. Expenditure data

Data collection method:

Diaries are not used to collect expenditure data.

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:7
Data for the following expenditure items are not collected:

7. Other Data Collection Issues

The following other topics are covered:

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

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.

The responses are edited office staff.

Extreme values are amended. In-kind receipts are included in the estimates, but consumption of own production is not. In-kind receipts are valued using: registers Consumption of own production is not valued.

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:13

Sampling errors: Sampling errors are computed for major aggregates and these sampling errors are published.

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:14

Documentation and Dissemination:
Published survey reports: Income Distribution Statistics 2000. Report is pubblished in Finnish but contains an English summary

Additional statistics (or special tables on request) are available for public use, with charges. Separate tables are published for low income households. Files of unidentifiable unit data are available (or available on request) for public use, with charges.


(1) Household income and expenditure data are compiled through administrative registrations as well as through a household survey. (2) International comparisons of income disparities (LUXEMBOURG Income Study, forthco ming EU-SILC). (3) Usual residents temporarily living away are included depen ding on the situation of the household, not on any fixed duration. (4) The concept of a reference person i s also used. Being acknowledged as main income earner is part of the definition of reference person. (5) More specifically the data collection period for interviews were 1/2001 to 4/2001, and for registers 06 /2001 to 2/2002. (6) Partly as an aggregate for the whole unit, and partly separately for each person receiving income. (7) Data on housing expenditure is collected by referring to expenditu re in the last 12 months, and also by referring to the last payment for housing. (8) Some termination and redundancy payments are classified as "income from paid employment", others as "transfer income" and as "employment-related income". (9) Old age benefits are classified as "transfer income", some of parts of which are classified as "employment-related income", but others not. (10) Other pensions are classified as "transfer income", some of parts of which are classified as "employment-related income", but others not. (11) Unemployment benefits are classified as "transfer income", some of parts of which are classified as "employment-related income", but others not. (12) Survivors benefits are classified as "transfer inc ome", some of parts of which are classified as "employment-related income", but others not. (13) Calibration to margins using CALMAR, demographic marginal distributions, income totals from tax register. (14) Stage of life-cycle, education, region, tenure status socio-economic class.