Nasjonalt senter for aldring og helse, Sykehuset i Vestfold, Tønsberg, og, Helse Nord-Trøndelag, Sykehuset Levanger.
Avdeling for fysisk helse og aldring, Folkehelseinstituttet, og, Nasjonalt senter for aldring og helse, Sykehuset i Vestfold, Tønsberg, og, Geriatrisk avdeling, Oslo universitetssykehus.
Tidsskr Nor Laegeforen. 2023 Jun 26;143(10). doi: 10.4045/tidsskr.22.0815. Print 2023 Jun 27.
The number of people with dementia is expected to triple by 2050. We present figures showing the prevalence of dementia and mild cognitive impairment in Trondheim, and show how weighting for non-response and nursing home residency affects these figures when comparing Trondheim with Nord-Trøndelag.
In the fourth data collection in the Trøndelag Health Study (HUNT4) in the Norwegian county of Trøndelag, people aged 70 and over in Trondheim were invited to participate in HUNT4 Trondheim 70+. The participants were interviewed and underwent cognitive testing. A diagnostic team diagnosed dementia and mild cognitive impairment. Weights adjusting for non-response bias were used in the comparison of Trondheim and Nord-Trøndelag.
The prevalence of dementia in Trondheim was estimated at 16.2 % for the age group 70 years and over, after weighting for non-response bias with regard to age, sex, education and proportion of nursing home residents. Unadjusted dementia prevalence was 21.0 % in Trondheim and 15.7 % in Nord-Trøndelag. After weighting, the prevalence was almost identical in the two samples.
Weighting for non-response is crucial for obtaining representative figures in prevalence studies of dementia.
预计到 2050 年，痴呆症患者人数将增加两倍。我们提供的数据显示了特隆赫姆的痴呆症和轻度认知障碍的患病率，并展示了在与特隆赫姆进行比较时，对无应答和养老院居住情况进行加权如何影响这些数据。
在挪威特伦德拉格郡特隆赫姆的特隆德拉格健康研究（HUNT4）第四次数据采集时，邀请了 70 岁及以上的特隆赫姆人参加 HUNT4 特隆赫姆 70+。参与者接受了访谈和认知测试。一个诊断小组对痴呆症和轻度认知障碍进行了诊断。我们在比较特隆赫姆和北特伦德拉格时使用了调整无应答偏差的权重。
在调整了年龄、性别、教育程度和养老院居住比例的无应答偏差权重后，70 岁及以上人群中，特隆赫姆的痴呆症患病率估计为 16.2%。未经调整的特隆赫姆痴呆症患病率为 21.0%，而北特伦德拉格的患病率为 15.7%。经过加权后，两个样本的患病率几乎相同。
对无应答进行加权对于获得痴呆症患病率的代表性数据至关重要。
