Neves-Guimaraes Alessandra, Udumyan Ruzan, Jayaprakash Demirel Kartheyaene, Larsson Gran Pernilla, Starkhammar Carin, Källestål Carina
Department of Odontological Research, Public Dental Service, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Department of Periodontology and Implantology, Public Dental Service, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Front Oral Health. 2025 Mar 6;6:1491723. doi: 10.3389/froh.2025.1491723. eCollection 2025.
The Mid Sweden Cohort (MSC) was established to investigate self-perceived oral and general health among two groups of aging individuals in two counties (Örebro and Östergötland) in Sweden. For internal and external data validation, we linked collected data on health status, behavior, sociodemographic circumstances, and dependency with national register data from Statistics Sweden and compared non-respondents and those lost to follow-up to respondents.
MSC is based on a longitudinal multiwave study of aging men and women who answered a cross-sectional questionnaire from MSC: (1) the 1992 cohort including participants aged 50 years in 1992 and (2) the 2007 cohort including participants aged 75 years in 2007. After the baseline surveys, data collection was conducted every 5 years, with the latest wave from 2017 included in our validation. Between 1992 and 2017, 8,879 participants were included in cohort 1, while 5,191 individuals were included in cohort 2 between 2007 and 2017.
After linking self-reported data with national register-based data and analyzing loss to follow-up and non-response numbers, we found that, besides age, factors such as being male, having immigrant status, lower income and education level, being single, and being in poor health were predictors of non-response and loss to follow-up, aligning with the findings of other studies. Based on our results, we conclude the MSC is reliable for further research, provided the observed bias is taken into account.
Using the MSC, we aim to analyze self-reported oral health changes as a predictor of dependency in the elderly and track oral health status over time. Furthermore, we plan to link data with register-based clinical oral health records. We also intend to add the 2022 wave data and future waves into the existing dataset.
瑞典中部队列研究（MSC）旨在调查瑞典两个县（厄勒布鲁和东约特兰）两组老年人的自我感知口腔健康和总体健康状况。为了进行内部和外部数据验证，我们将收集的有关健康状况、行为、社会人口统计学情况和依赖性的数据与瑞典统计局的国家登记数据相链接，并将无应答者和失访者与应答者进行比较。
MSC基于对老年男性和女性的纵向多波研究，这些参与者回答了MSC的横断面问卷：（1）1992年队列，包括1992年年龄为50岁的参与者；（2）2007年队列，包括2007年年龄为75岁的参与者。在基线调查之后，每5年进行一次数据收集，我们的验证纳入了2017年的最新一波数据。1992年至2017年期间，队列1纳入了8879名参与者，而2007年至2017年期间，队列2纳入了5191名个体。
在将自我报告的数据与基于国家登记的数据相链接并分析失访和无应答人数之后，我们发现，除了年龄之外，男性、具有移民身份、收入和教育水平较低、单身以及健康状况较差等因素是无应答和失访的预测因素，这与其他研究的结果一致。基于我们的结果，我们得出结论，只要考虑到观察到的偏差，MSC对于进一步的研究是可靠的。
利用MSC，我们旨在分析自我报告的口腔健康变化作为老年人依赖性的预测指标，并随时间跟踪口腔健康状况。此外，我们计划将数据与基于登记的临床口腔健康记录相链接。我们还打算将2022年的一波数据和未来的波次数据添加到现有数据集中。
