Predictors of refusal to participate: a longitudinal health survey of the elderly in Australia
Predictors of refusal to participate: a longitudinal health survey of the elderly in Australia
复制标题
DOI：
10.1186/1471-2458-2-4
复制
发表时间：
2002-03-13
影响因子：
4.5
通讯作者：
Henderson, AS
中科院分区：
文献类型：
--
作者：
Jacomb, PA;Jorm, AF;Henderson, AS
背景：由于不接触、拒绝或死亡而导致纵向研究参与者的流失可能会给此类研究的结果带来偏差。本文描述的研究检查了对 70 岁老年人进行的三轮拒绝调查的原因。方法：在一项涉及三轮的纵向研究中，将参与者与那些拒绝参加但允许线人接受采访的人以及那些拒绝任何参与的人进行比较。结果：在第一波中，第二波非参与者的两组都报告了较低的职业地位和较少的教育年限，获得了较低的言语智商分数和认知表现分数，并因采访而经历了一些痛苦。那些只接受信息采访的人的身体健康状况比那些参与和拒绝的人要差。抑郁和焦虑症状与不参与无关。多变量分析发现，言语智商和认知障碍预示着拒绝。第二波和第三波拒绝者的结果非常相似。结论：对老年人的纵向研究可能高估了认知能力，因为表现较差的人拒绝率较高。然而，没有证据表明焦虑或抑郁存在偏见。
Background: The loss of participants in longitudinal studies due to non-contact, refusal or death can introduce bias into the results of such studies. The study described here examines reasons for refusal over three waves of a survey of persons aged 70 years.Methods: In a longitudinal study involving three waves, participants were compared to those who refused to participate but allowed an informant to be interviewed and to those who refused any participation.Results: At Wave 1 both groups of Wave 2 non-participants had reported lower occupational status and fewer years of education, had achieved lower verbal IQ scores and cognitive performance scores and experienced some distress from the interview. Those with an informant interview only were in poorer physical health than those who participated and those who refused. Depression and anxiety symptoms were not associated with non-participation. Multivariate analyses found that verbal IQ and cognitive impairment predicted refusal. Results were very similar for refusers at both Waves 2 and 3.Conclusions: Longitudinal studies of the elderly may over estimate cognitive performance because of the greater refusal rate of those with poorer performance. However, there is no evidence of bias with respect to anxiety or depression.