Income Study 2003, household file

Statistics Norway (SSB) conducted wide-ranging Income Studies in 1958, 1962, 1967, 1970, 1973, 1976, 1979 and 1982. As of 1984, SSB moved to a system of annual surveys. This entailed changes, more in terms of sample size and sampling method than the type of information that was gathered. The information is mainly decided by what is available in public tax assessment records.

The Income Studies should not be considered ordinary sample surveys, they are based on a sample drawn from registers from the Norwegian equivalent to the Internal Revenue Service. This means that foreign citizens would be part of the sample if they are registered in the Central Person Register, which they will normally be if they have valid work and residence permits. Children born during the year in question will be included in the sample regardless of birth date, and so will persons dying that the year.

The objective of the Income Studies have been to elucidate the income conditions for the entire population and for different groups. A main point is to gather statistics on households that live and eat together, as well as getting an overview of the distribution of persons and households by size of income, socio-economic groups, household type, geography etc. Another objective is to collect income and fortune data as a backdrop for the Level of Living and Consumer surveys. Information is gathered om all types of income, fortune, taxes, income for individuals and households. Some information is added from other registers (amongst others, marital status and family composition, whilst information on household composition is gathered through interviews. In addition, one generally includes information on education, profession and occupation for individuals and household composition, type and primary income recipients for the households.

There exist both a household file and a person file. These are documented separately. This is the household file.

挪威统计统计局（Statistics Norway, SSB）曾于1958年、1962年、1967年、1970年、1973年、1976年、1979年及1982年开展多轮广泛的收入研究。截至1984年，SSB转而采用年度调查体系，此次转型在样本量与抽样方法层面的调整幅度较大，而采集的信息类型变化相对有限。所采集的信息主要依托公共税务评估记录中的可获取数据确定采集框架。

本次收入研究并非常规抽样调查，其样本取自挪威对应美国国税局（Internal Revenue Service）的税务登记系统。这意味着，若外国公民在挪威中央人口登记系统完成注册——通常持有有效工作及居留许可的外国公民均可完成注册——即可纳入研究样本；当年出生的新生儿与当年去世的居民也同样会被纳入样本范围。

本研究的核心目标为阐明全体国民及不同群体的收入状况，重点在于采集共同居住与生活的家庭的统计数据，并梳理按收入规模、社会经济群体、家庭类型、地域分布等维度划分的人口与家庭分布概况。另一项目标是收集收入与财富数据，作为生活水平与消费调查的背景支撑。研究采集各类收入、财富、税费相关数据，涵盖个人与家庭收入信息。部分信息取自其他登记系统（如婚姻状况与家庭构成），而家庭构成信息则通过访谈采集。此外，研究通常还会纳入个人的教育背景、职业与工种信息，以及家庭构成、家庭类型与家庭主要收入来源者相关数据。

该数据集包含家庭档案与个人档案两类文件，二者分别独立建档。本文件为家庭档案。