Midlife in the United States (MIDUS 1), 1995-1996

The Midlife in the United States (MIDUS) is a collaborative, interdisciplinary investigation of patterns, predictors, and consequences of midlife development in the areas of physical health, psychological well-being, and social responsibility. A description of the study and findings from it are available at http://www.midus.wisc.edu. The first wave of the MIDUS study (MIDUS 1 or M1) collected survey data from a total of 7,108 participants. The baseline sample was comprised of individuals from four subsamples: (1) a national RDD (random digit dialing) sample (n=3,487); (2) oversamples from five metropolitan areas in the U.S. (n=757); (3) siblings of individuals from the RDD sample (n=950); and (4) a national RDD sample of twin pairs (n=1,914). All eligible participants were non-institutionalized, English-speaking adults in the coterminous United States, aged 25 to 74. Data from the samples were collected primarily in 1995/96. The survey (Project 1) dataset contains responses from a 30-minute Phone interview and two 50-page Self-Administered Questionnaire (SAQ) instruments. Of the 7,108 respondents who completed the Phone interview, 6,325 also completed the SAQ. This updated version of the study is comprised of three primary datasets: Dataset 1, Main, Siblings, and Twin Data, contains responses from the main survey of 7,108 respondents. Respondents were asked to provide extensive information on their physical and mental health throughout their adult lives, and to assess the ways in which their lifestyles, including relationships and work-related demands, contributed to the conditions experienced. Those queried were asked to describe their histories of physical ailments, including heart-related conditions and cancer, as well as the treatment and/or lifestyle changes they went through as a result. A series of questions addressed alcohol, tobacco, and illegal drug use, and focused on history of use, regularity of use, attempts to quit, and how the use of those substances affected respondents' physical and mental well-being. Additional questions addressed respondents' sense of control over their health, their awareness of changes in their medical conditions, commitment to regular exercise and a healthy diet, experience with menopause, the decision-making process used to deal with health concerns, experiences with nontraditional remedies or therapies, and history of attending support groups. Respondents were asked to compare their overall well-being with that of their peers and to describe social, physical, and emotional characteristics typical of adults in their 20's, 40's, and 60's. Information on the work histories of respondents and their significant others was also elicited, with items covering the nature of their occupations, work-related physical and emotional demands, and how their personal health had correlated to their jobs. An additional series of questions focusing on childhood queried respondents regarding the presence/absence of their parents, religion, rules/punishments, love/affection, physical/verbal abuse, and the quality of their relationships with their parents and siblings. Respondents were also asked to consider their personal feelings of accomplishment, desire to learn, sense of control over their lives, interests, and hopes for the future. The Datasets previously numbered 2 and 3 have been removed to avoid redundancies, and all datasets have been renumbered. Please refer to the readme file. Dataset 2, Twin Screener Data, provides the first national sample of twin pairs ascertained randomly via the telephone. Dataset 3, Coded Text Responses, describes how open-ended textual responses in the MIDUS 1 Computer-Assisted Telephone Interview (CATI) and Self-Administered Questionnaire (SAQ) were transformed into categorical numeric codes. These codes are included in a stand-alone dataset containing only those cases (N=3,950) that contained text data in their responses. Online Analysis Only: Datasets 1, 2, and 3 were merged together by the SU_ID variable to form "Merged Data with Weights (Online Analysis Only)" (Dataset 4) for online analysis capabilities. MIDUS also maintains a Colectica portal, which allows users to interact with variables across waves and create customized subsets. Registration is required.

美国中年研究（MIDUS）是一项跨学科的合作研究，旨在探究中年发展阶段在身体健康、心理健康和社会责任领域中的模式、预测因素及其后果。该研究的描述及研究结果可查阅于http://www.midus.wisc.edu。MIDUS研究的首次调查波次（MIDUS 1或M1）共收集了7,108名参与者的调查数据。基线样本由以下四个子样本组成：（1）来自全国范围的随机拨号样本（n=3,487）；（2）来自美国五个大都市区的超样本（n=757）；（3）来自RDD样本中个人的兄弟姐妹（n=950）；以及（4）全国范围的RDD双胞胎样本（n=1,914）。所有合格的参与者均为非机构化、英语为母语的美国大陆25至74岁的成年人。样本数据主要在1995/96年间收集。调查（项目1）数据集包含了30分钟电话访谈和两个50页的自我管理问卷（SAQ）工具的响应。在完成电话访谈的7,108名受访者中，有6,325人也完成了SAQ。本研究的更新版本包括三个主要数据集：数据集1，主要、兄弟姐妹和双胞胎数据集，包含了7,108名受访者的主要调查响应。受访者被要求提供他们在成年生活中身体和心理健康方面的详细信息，并评估他们的生活方式，包括人际关系和工作相关需求，如何导致他们所经历的状况。受访者被要求描述他们身体疾病的病史，包括心脏病和癌症，以及他们因此经历的医疗和治疗/生活方式的改变。一系列问题针对酒精、烟草和非法定药物的使用，重点关注使用历史、使用频率、戒烟尝试以及这些物质的使用如何影响受访者的身体和心理健康。此外，还提出了关于受访者对自身健康控制感、对医疗状况变化的认识、对定期锻炼和健康饮食的承诺、更年期经历、处理健康问题的决策过程、非传统疗法或治疗的经验以及参加支持小组的历史等问题。受访者还被要求将他们的整体福祉与同龄人进行比较，并描述20岁、40岁和60岁成年人的典型社会、身体和情感特征。还收集了受访者及其重要他人的工作历史信息，涵盖了他们职业的性质、与工作相关的身体和情感需求以及他们的个人健康如何与工作相关联。此外，还提出了一系列关于童年的问题，询问受访者关于他们父母的存在/不存在、宗教、规则/惩罚、爱与情感、身体/言语虐待以及他们与父母和兄弟姐妹的关系质量。受访者还被要求考虑他们个人的成就感、学习的愿望、对生活的控制感、兴趣和对未来的希望。先前编号为2和3的数据集已被删除以避免重复，所有数据集均已重新编号。请参阅readme文件。数据集2，双胞胎筛查数据，提供了通过电话随机确定的全国范围内双胞胎对的第一样本。数据集3，编码文本响应，描述了MIDUS 1计算机辅助电话访谈（CATI）和自我管理问卷（SAQ）中的开放式文本响应如何转换为分类数值代码。这些代码包含在一个独立的数据集中，仅包含那些在其响应中包含文本数据的案例（N=3,950）。仅在线分析：数据集1、2和3通过SU_ID变量合并，形成了“带权重的合并数据（仅在线分析）”数据集4，以实现在线分析功能。MIDUS还维护一个Colectica门户，允许用户跨波次交互变量并创建定制子集。注册是必需的。