Non-participation and mortality in different socioeconomic groups: the FINRISK population surveys in 1972-92
Non-participation and mortality in different socioeconomic groups: the FINRISK population surveys in 1972-92
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DOI：
10.1136/jech.2006.049908
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发表时间：
2007-05-01
影响因子：
6.3
通讯作者：
Vartiainen, Erkki
中科院分区：
文献类型：
--
作者：
Harald, Kennet;Salomaa, Veikko;Vartiainen, Erkki
背景：应答率下降对流行病学研究得出的估计值的有效性构成严重威胁。如果受访者和非受访者在系统上不同，研究结果可能会有偏差。一项基于人群的队列研究旨在调查受访者和非受访者之间的社会经济结构差异，以及这些差异对总死亡率和心血管死亡率的社会经济差异的贡献。设计：数据包括32名354名男性和女性参与者以及4890名年龄在35-74岁的非参与者，他们属于1972年、1977、1982、1987或1992年芬兰FINRISK五项调查之一的样本。结果：无论是男性还是女性，社会经济地位较低的群体在未被调查者中的比例都偏高。当以参与者中最高的社会经济群体作为参照组比较死亡的相对风险时，发现尽管参与者和非参与者的社会经济梯度相似-即较低的群体有更高的死亡风险-但在没有回答的人中，风险处于较高的水平。结论：基于参与者的分析不会扭曲与社会经济地位相关的相对死亡风险。然而，它确实低估了绝对风险。
Background: Declining response rates pose a serious threat to the validity of estimates derived from epidemiological studies. If respondents and non-respondents differ systematically from each other, there can be a bias in the results of the study. A population-based cohort study was conducted to investigate disparities in socioeconomic structure between respondents and non-respondents and the contribution of these disparities to socioeconomic differences in total and cardiovascular mortality.Design: Data comprised 32 354 male and female participants and 4890 non-participants aged 35-74 years who belonged to the sample in one of the five FINRISK surveys in 1972, 1977, 1982, 1987 or 1992 in Finland. They were followed up for 9 years and 6 months.Results: It was found that the lower socioeconomic groups were over-represented among non-respondents both in men and women. When comparing the relative risk of death using the highest socioeconomic group of the participants as the reference group, it was found that although the socioeconomic gradient was similar for participants and non-participants - that is, lower groups had a higher risk of death - the risk was at a higher level among non-respondents.Conclusions: Basing analysis on participants does not distort the relative risk of death associated with socioeconomic position. However, it does underestimate the absolute risk.