Statistical Yearbook of the Czech Republic
Income, expenditure and consumption of the population - methodology |
Contents |
Notes on tables Tables 9-1 to 9-6. Composition of the samples of reporting households and the structure of the money income and expenditure of households Listed in the tables are data from the sample survey of household budgets. The household - i.e. the number of persons living together and on common budget - constitutes both the reporting and sample unit. The core of the households is a family, as a rule, but it can also be an individual. Households (respondents) included in household budget statistics are now sampled by the method of purposive quota sampling. There are two types of samples used: 1. Basic reporting sample which ensured representative results for social groups in the Czech Republic. The frequency of individual groups of households according to sampling characteristics is determined with reference to results from the sample survey on the money income of the population (microcensus). The following sampling characteristics were used to select the households:
The results for the social groups were supplemented with an estimate of data on an “average reporting household”. To eliminate disproportion in the representation of the individual social groups in the basic reporting sample, the data for the respective groups were re-weighted with reference to the social structure of households established in microcensus. The households of pensioners with economically active members and the households of the unemployed, which are not measured in household budgets statistics, were attached for the calculation of weights to the households of manual workers. b Net money income per person: it characterizes the income level of households not only for the purpose of sampling but also for that of classifying these households by income level when data are processed; the net income does not include income tax, health and social insurance reimbursements, loans, credits received and savings withdrawn; c Number of unprovided-for children in households of economically active persons or the number and sex of members in households of economically inactive pensioners. 2. Supplementary sample which comprised families with children, living just at subsistence level. An appropriate number of these families were represented in the basic sample, too. For separate processing, however, they would be too low in number. Number of equivalencies refers to the composition of household derived from weights of consumption of individual members in the household. The weights are defined by the OECD scale as follows: first adult in the household = 1.0, every other adult (over 13 of age) = 0.7, every child (aged 13 or less) = 0.5. Money income, total is gross money income. It includes income tax and social and health insurance contributions and excludes loans and deposits withdrawn. For households of the self-employed, the money income includes amounts transferred by these persons from profits of their businesses to satisfy the needs of their households and members of the households. It is comparable to the income of the households of other social groups at the level of the so-called net income only (excluding income tax and contributions to health and social insurance schemes). For most of the self-employed, tax burden of their households is not fully covered, because contributions to health and social insurance schemes are part of their bookkeeping and are not reported in household budgets statistics. Income tax is included in household budgets statistics only if it is paid from funds of the household. Income from work refers to incomes from work activities carried out in the framework of employment, service and membership relationships or incomes from business or any other independent gainful activities; such incomes are referred to as incomes from main activity, if the activity is the main source of the worker’s income. To ensure international comparability of the statistical indicators, the items of money expenditure relating to 1999 and subsequent years were re-arranged to comply with the national version (CZ-COICOP) of the international Classification of Individual Consumption by Purpose, COICOP (see the statistical classifications in force listed in the introduction of this book), which is obligatory for all statistical surveys. According to this classification, the individual (final) consumption includes neither expenditure on the purchase, building and reconstruction of houses and dwellings nor expenditure on kitchen gardens and domestic animals (not pets), which is why these were placed under a separate other expenditure item not included in final consumption. Money expenditure, total includes neither deposits nor repayments of loans. The individual expenditure items are the following:
The coverage of the other items is evident from their names. Table 9-1 lists data on an average household of the basic reporting sample in the years 2000-2004. Tables 9-2 and 9-3 show data on the basic reporting sample, broken down by social group; the data are supplemented with estimates for an average household. Tables 9-4 to 9-5 show statistics on the supplementary and basic reporting samples of households whose net incomes did not exceed 1.4 multiple of the subsistence level calculated from rates in force for a given household (see the table in the introduction to Chapter 24. Social Security, showing subsistence level amounts). The term two-parent nuclear family refers to a family consisting of a married couple and unprovided-for child/children, in which neither other relatives nor economically active child/children live. The term lone-parent nuclear family refers to a family consisting of a single parent and unprovided-for child/children, in which neither other relatives nor economically active child/children live. Table 9-6 presents figures related to the basic sample of household budgets statistics, broken down by net money income per household member per year. Each social group in low income brackets includes 20% of households with the lowest net money income per 1 household member. The net money income of each of the households classified to this group did not exceed the upper net income limit shown in the table. The group of high-income households also included 20% of households with the highest net money income per 1 household member in each social group, the net money income of these households being above the lower limit shown in the table. The consumption is calculated by balancing, from figures on industrial production, self-supplies, initial and final stocks, imports and exports. These data are taken from statistical questionnaires monitored by the CZSO, food unions, some external trade organizations, and other institutions. The table shows average annual consumption per capita (with reference to mid-year population). The consumption figures are derived by a balancing method from data on production, stocks, imports and exports. The data are obtained from statistical questionnaires monitored by the CZSO, manufacturers and external trade organizations. The consumption of gas is calculated from data provided by Czech gas enterprises and the consumption of electricity from data provided by the distributors. The figures on consumer durables in households are derived from figures on production, stocks, imports and exports, by cumulating annual increments and taking account of the service life (determined by the Research Institute of Trade) or wear and tear of the durables. The figures on cars and motorcycles are calculated from information provided by the Ministry of the Interior of the Czech Republic and those on telephones are based on data provided by ČESKÝ TELECOM a. s. and mobile network operators. The individual figures appearing in this chapter are comparable with the data published in the statistical yearbooks of previous years.
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Detailed household budgets statistics and food consumption data are shown, along with methodological descriptions, in the following CZSO publications brought out according to the Catalogue of Publications 2005 (group 3 – LABOUR, SOCIAL STATISTICS, subgroup 30 - Living Standard): - “Household Incomes, Expenditures and Consumption as Measured by Household Budget Statistics” (Czech-English) – (Part I - June, Part II - July, Part III - August) Part I: Social Groups, Income Brackets
Part II: Types of Households
Part III: Households on Minimum Income
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