Kauppinen Markku, Davidsen Michael, Valter Sundh
Finnish Centre for Interdisciplinary Gerontology, University of Jyväskylä,.
Aging Clin Exp Res. 2002 Jun;14(3 Suppl):5-9.
This paper describes the research design of the NORA (Nordic Research on Ageing) study carried out in three Nordic localities. Response and participation rates in the baseline (age 75) and follow-up (age 80) studies are shown for each locality; in addition, the number of dead and censored cases are presented. In Göteborg, 450 persons were randomly sampled for invitation to the baseline study among all persons aged 75 years; in Glostrup, 571 persons aged 75 were selected, and in Jyväskylä all 388 persons aged 75 were selected. Baseline measurements were conducted in Jyväskylä and Glostrup in 1989, and in Göteborg in 1990. The participants were first interviewed at home, and afterwards went through tests and examinations in a standardized laboratory environment. The follow-up study was carried out five years after the baseline study. In Jyväskylä 92.9% (N=355), in Göteborg 82.5% (N=368), and in Glostrup 84.5% (N=480) of the eligible subjects took part in the baseline interview; corresponding figures for taking a test at the laboratory/clinic of the study center were 77.2% (N=295), 72.4% (N=323) and 72.4% (N=411). For the follow-up interview, those subjects who took part in the baseline interview were considered eligible. The participation rate was 93.6% (N=250) in Jyväskylä, 76.6% (N=226) in Göteborg, and 79.1% (N=277) in Glostrup. Corresponding figures for the tests at the study center were 71.5% (N=191), 71.9% (N=212) and 59.7% (N=209). The mortality rate was lowest in Göteborg (19.0%), and highest in Glostrup (27.2%). The data of the NORA study enables various types of descriptions and comparisons to be made across localities and measurement occasions.
本文描述了在北欧三个地区开展的诺拉（北欧老龄化研究）研究的研究设计。列出了每个地区在基线（75岁）和随访（80岁）研究中的应答率和参与率；此外，还给出了死亡和失访病例的数量。在哥德堡，从所有75岁的人群中随机抽取450人邀请其参加基线研究；在格罗斯楚普，选取了571名75岁的人，在于韦斯屈莱，选取了所有388名75岁的人。1989年在于韦斯屈莱和格罗斯楚普进行了基线测量，1990年在哥德堡进行了基线测量。参与者首先在家中接受访谈，然后在标准化的实验室环境中接受测试和检查。随访研究在基线研究五年后进行。在于韦斯屈莱，92.9%（N = 355）符合条件的受试者参加了基线访谈；在研究中心实验室/诊所进行测试的相应比例分别为77.2%（N = 295）、72.4%（N = 323）和72.4%（N = 411）。对于随访访谈，参加基线访谈的受试者被视为符合条件。在于韦斯屈莱，参与率为93.6%（N = 250），在哥德堡为76.6%（N = 226），在格罗斯楚普为79.1%（N = 277）。在研究中心进行测试的相应比例分别为71.5%（N = 191）、71.9%（N = 212）和59.7%（N = 209）。死亡率在哥德堡最低（19.0%），在格罗斯楚普最高（27.2%）。诺拉研究的数据使得能够在不同地区和测量时点进行各种类型的描述和比较。
