SWIP - Swedish income panel 2003, RTB family

The Swedish income panel was originally set up in the beginning of the 90s to make studies of how immigrants assimilate in the Swedish labour market possible. It consists of large samples of foreign-born and Swedish-born persons. Income information from registers is added for nearly 40 years. In addition income information relating to spouses is also available as well as for a subset of mothers and fathers. This makes it possible to construct measures of household income based on a relatively narrow definition. However, starting in 1998 there is also more information making it possible to include children over 18 and their incomes in the family. By matching with some different additional registers information has been added for people who have been unemployed or involved in labour market programmes during the 90s, on causes of deaths for people who have deceased since 1978 and on recent arrived immigrants from various origins.
It has turned out that the data-base is quite useful for analysing research-questions other than originally motivating construction of the panel. The panel has been used for cross country comparisons of immigrants in the labour market and to analyse income mobility for different breakdowns of the population, and analyses the development in cohort income. There have been analyses of social assistance receipt among immigrants as well as studies of intergeneration mobility of income, the labour market situation of young immigrants and the second generation of immigrants. On-going work includes evaluation of labour market training programmes and studies of early retirement among immigrants. Planned work includes studies of the economic transition from child to adulthood during the 80s and 90s as well as studies of how frequent immigrant children are subject to measures under the Social Service Act and the Care of Youth Persons Act.
The potentials of the Swedish Income Panel can be understood if one compares it with better known income-panels in other countries. For example SWIP covers more years and has a larger sample than the German Socio-Economic Panel (GSOEP). On the other hand, the fact that information is obtained from registers only makes this Swedish panel less rich in variables. There are striking parallels between the Gothenburg Income Panel and the labour market panel at the Centre for Labour Market and Social Research in Aarhus for the Danish population.

瑞典收入面板（Swedish Income Panel，简称SWIP）最初建立于20世纪90年代初，旨在为研究移民如何融入瑞典劳动力市场提供可能。该面板包含大量外国出生者和瑞典出生者的样本，纳入了近40年来自登记系统的收入信息。此外，还提供配偶的收入信息以及部分父母的收入信息，这使得基于相对狭义定义构建家庭收入衡量指标成为可能。然而，自1998年起，更多信息被纳入，可将18岁以上子女及其收入计入家庭收入。通过与其他多个附加登记系统匹配，新增了90年代期间失业或参与劳动力市场项目人群的信息、1978年以来去世者的死因信息，以及来自不同原籍的新移民信息。

事实证明，该数据库不仅适用于最初推动面板构建的研究问题，还对其他研究问题的分析具有重要价值。SWIP已被用于劳动力市场中移民的跨国比较、不同人口细分群体的收入流动性分析，以及队列收入变化趋势的研究。相关研究包括移民的社会救助领取情况分析、代际收入流动性研究、年轻移民的劳动力市场状况研究，以及移民二代研究。正在进行的研究包括劳动力市场培训项目的评估和移民提前退休的研究。计划开展的研究包括80-90年代从儿童到成年的经济转型研究，以及移民儿童受《社会服务法》（Social Service Act）和《青少年照顾法》（Care of Youth Persons Act）相关措施覆盖频率的研究。

通过与其他国家知名的收入面板对比，可更好地理解SWIP的潜力。例如，SWIP的覆盖年限更长、样本量更大，优于德国社会经济面板（German Socio-Economic Panel，简称GSOEP）。另一方面，由于信息仅来自登记系统，该瑞典面板的变量丰富度较低。哥德堡收入面板（Gothenburg Income Panel）与奥胡斯劳动力市场与社会研究中心（Centre for Labour Market and Social Research in Aarhus）针对丹麦人口的劳动力市场面板之间存在显著相似性。