Study of the changing trends in contemporary Japanese families.

本研究的目的是：1）进行继日本家庭社会学会1998年第一次全国家庭调查（NFRJ 98）之后的第二次调查; 2）利用该数据分析家庭变化的方向和趋势; 3）制作并提供该数据，作为供许多研究者使用的公共数据。在2002年和2003年，我们继续有机会讨论问卷的制作和抽样设计的规划，并最终在2003年12月完成了问卷。关于调查对象的抽样，我们重新审视了NFRJ 98的抽样设计和方法，并澄清了其中的问题（这些作品刊登在Watanabe et.al.（编），“当代日本家庭的结构和变化”，东京大学出版社，2004年）。在这些工作之后，我们于2003年10月采用分层两阶段随机抽样方法，对1926年至1965年出生并居住在日本的男性或女性进行了抽样。本研究于2004年1月至2004年2月期间进行自填式问卷调查，共取得5，054个样本。2004年，我们开始对8月份交付的数据集进行清理工作，并于11月份完成了这些工作。我们主要在该项目的合作研究者之间共享这些清理后的数据，并于2005年3月发表了初步工作报告，我们对此进行了描述性分析。与此同时，我们继续进行数据的二次清理工作，并在合作研究人员之间共享清理后的数据。虽然NFRJ 03数据有降低单身住户率的趋势，但与日本国家统计数据的比较结果表明，NFRJ 03数据足以作为公共使用数据。

The aim of this project is 1)to do the second survey following the first survey of National Family Research of Japan in 1998 (NFRJ98) produced by Japan Society of Family Sociology, 2)to analyze the direction and trends of family changes by this data, and 3)to make and provide this data as a public use data for many researchers. In the year 2002 and 2003, we continued to have opportunities to discuss for both making questionnaires and planning sampling design, and we had finally completed the questionnaire on December 2003. With regard to sampling of the respondents, we reexamined sampling design and method of NFRJ98 and clarify the problem of them (these works were printed in Watanabe et.al.(Eds.), "Structure and change in contemporary Japanese families", University of Tokyo Press, 2004).After these works, we did sampling in October 2003 by stratified two-stage random sampling method for either man or woman who was born in between 1926 and 1965, and were living in Japan. We did self administered survey within duration from January 2004 to February 2004, and we got totally 5,054 samples as respondents. In the year 2004, we started with the cleaning work of the data sets delivered in August, and had completed these work in November. We shared this cleaned data mainly among co-researchers of this project, and published a primary working report in March 2005, which we did descriptive analysis. At the same time, we had continued the secondary cleaning work of the data, and we shared cleaned data among co-researchers. Although NFRJ03 data had tendency of lowering rate of the single household resident, results of the comparison with national statistics in Japan showed that NFRJ03 data was enough to good for the use as a public use data.