Midlife in the United States (MIDUS Refresher 1), 2011-2014

In 2011-2014, the MIDUS Refresher study recruited a national probability sample of 3,577 adults, aged 25 to 74, designed to replenish the original MIDUS 1 baseline cohort and paralleling the five decadal age groups of the MIDUS 1 baseline survey [ICPSR 2760]. The MIDUS Refresher survey employed the same comprehensive assessments as those assembled on the existing MIDUS sample, but with additional questions about the effect of the economic recession of 2008-09. The MIDUS Refresher collection is split into two datasets: Aggregate Data and Coded Text Data. The Coded Text Dataset provides coded responses to open-ended question items in the Aggregate Dataset. The survey data collection (Project 1) [MIDUS, ICPSR 2760] consisted of a 30-minute phone interview followed by two 50-page mailed self-administered questionnaires. Survey data were collected on demographic, psycho-social, and physical and mental health information. This new crosssectional MIDUS sample allows the examination of period effects on health (mental and physical) related to the economic recession by comparing the pre-recession MIDUS 1 sample with the post-recession MIDUS Refresher sample. A further objective of the MIDUS Refresher sample was to strengthen cross-project analyses in MIDUS by increasing the sample sizes available for testing hypotheses dealing with the interplay of key factors (e.g., socioeconomic status, gender, psychosocial factors, biological factors) in mid- and laterlife health. To that end, the MIDUS Refresher sample followed the same multi-disciplinary protocol established in the main MIDUS sample, in that after completing the survey protocol respondents were asked to complete a cognitive assessment by phone (Project 3) [MIDUS 3, ICPSR 36346] and later became eligible to participate in daily diary assessments (Project 2) [MIDUS 2, ICPSR 4652] biomarker assessments (Project 4) [MIDUS 2: Biomarker Project, ICPSR 29282] and neuroscience assessments (Project 5) [MIDUS 2: Neuroscience Project, ICPSR 28683]. The MIDUS Refresher was funded by the National Institute on Aging as two separate but related efforts: The MIDUS Refresher younger decades (MRY), was fielded in November, 2011, and recruited over 2,100 new participants aged 25 to 54; Funding was later added for the MIDUS Refresher older decades (MRO), which was fielded in June, 2013 and recruited over 1,400 new participants aged 55 to 74. Demographic variables include age, sex, gender, race, religion, and marital status.

在2011至2014年间，MIDUS Refresher研究项目招募了3,577名25至74岁的成年人作为全国概率样本，旨在补充原始的MIDUS 1基线队列，并与MIDUS 1基线调查的五个年龄段相呼应[ICPSR 2760]。MIDUS Refresher调查采用了与现有MIDUS样本相同的全面评估方法，但增加了关于2008-09年经济衰退影响的问题。MIDUS Refresher数据收集分为两个数据集：汇总数据和编码文本数据。编码文本数据集提供了汇总数据集中开放式问题项的编码回答。调查数据收集（项目1）[MIDUS, ICPSR 2760]包括一次30分钟的电话访谈和随后两次各50页的邮寄自填问卷。调查数据涵盖了人口统计、心理社会、以及身体和心理健康信息。这个新的横断面MIDUS样本允许通过比较经济衰退前后的MIDUS 1样本，来研究经济衰退对健康（精神和身体）的周期性影响。MIDUS Refresher样本的另一个目标是加强MIDUS项目中的跨项目分析，通过增加可用于测试涉及关键因素（例如社会经济地位、性别、心理社会因素、生物因素）在中年和晚年健康中相互作用的假设的样本量。为此，MIDUS Refresher样本遵循了与主要MIDUS样本中建立的同多学科协议，即完成调查协议后，受访者被要求通过电话完成认知评估（项目3）[MIDUS 3, ICPSR 36346]，后来有资格参与每日日记评估（项目2）[MIDUS 2, ICPSR 4652]、生物标志物评估（项目4）[MIDUS 2: 生物标志物项目，ICPSR 29282]和神经科学评估（项目5）[MIDUS 2: 神经科学项目，ICPSR 28683]。MIDUS Refresher项目由美国老年研究所资助，分为两个相互关联但独立的努力：MIDUS Refresher年轻年龄段（MRY）于2011年11月实施，招募了超过2,100名25至54岁的参与者；后来增加了MIDUS Refresher年长年龄段（MRO）的资金，该项目于2013年6月实施，招募了超过1,400名55至74岁的参与者。人口统计变量包括年龄、性别、性别认同、种族、宗教和婚姻状况。