Wilson A J, Webber I L
Exp Aging Res. 1976 Sep;2(5):367-87. doi: 10.1080/03610737608257996.
This report focuses upon attrition in longitudinal studies of older persons using a Florida survey as an illustration. In 1959 interviews were completed with a probability sample (N = 2544) of older noninstutionalized residents (age 65+) of a retirement community. Data were collected on health status, health practices, social factors, and activities. Nine years later a follow-up study of the same sample was undertaken. In this report 1959 data for 2497 of these persons are analyzed by results of the 1968 effort (reinterviewed, lost to follow-up, or deceased). About one third of this highly migratory sample could not be located in 1968; death certificates were located for another one third; and the remaining one third was reinterviewed. Social characteristics, housing arrangements, activities, and chronic conditions of the three subpopulations are compared. Persons reinterviewed were found to differ from dropouts in age, sex, type of dwelling unit, activity patterns, and prevalence of chronic conditions. No significant differences were found in educational level, household composition, usual occupation, and retirement status (when controlled for sex).
本报告以一项佛罗里达调查为例，重点关注老年人纵向研究中的损耗情况。1959年，对一个退休社区中年龄在65岁及以上的非机构化老年居民进行了概率抽样访谈（N = 2544）。收集了有关健康状况、健康行为、社会因素和活动的数据。九年后，对同一样本进行了随访研究。在本报告中，根据1968年的调查结果（重新访谈、失访或死亡）对其中2497人的1959年数据进行了分析。在这个流动性很强的样本中，约三分之一的人在1968年无法找到；为另外三分之一的人找到了死亡证明；其余三分之一的人接受了重新访谈。对这三个亚群体的社会特征、住房安排、活动和慢性病情况进行了比较。结果发现，接受重新访谈的人与失访者在年龄、性别、居住单元类型、活动模式和慢性病患病率方面存在差异。在教育水平、家庭构成、通常职业和退休状态（在控制性别后）方面未发现显著差异。
