Complete Loss of Natural Teeth and Loneliness: A Fixed-Effect Analysis.

Journal of dental research Pub Date : 2024-09-01 Epub Date: 2024-08-05 DOI:10.1177/00220345241263265
Y Matsuyama
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Abstract

Psychosocial properties of oral health have been reported. The present study aimed to investigate the causal effect of complete loss of natural teeth on loneliness by using fixed-effects analysis to control for confounding factors, including unmeasured time-invariant factors. Data from older adults participating in at least 2 consecutive waves of the English Longitudinal Study of Ageing in waves 3 (2006/2007), 5 (2010/2011), and 7 (2014/2015) were analyzed (N = 18,682 observations from 7,298 individuals). The association between complete loss of natural teeth and loneliness score (ranging from 3 to 9) was examined using fixed-effect linear regression analysis adjusting for time-varying confounders, including sociodemographic and health characteristics. The prevalence of complete tooth loss was 12.7%, 12.8%, and 10.6% in waves 3, 5, and 7, respectively. Individuals who transitioned to complete tooth loss during any 2 consecutive waves had an increase in loneliness score by 0.27 (95% confidence interval [CI] 0.03, 0.52), which was greater than those who maintained natural teeth (-0.03; 95% CI -0.05, -0.01). Fixed-effects analysis adjusting for time-varying confounders revealed a significant association between complete loss of natural teeth and an increase in loneliness score by 0.31 (95% CI 0.17, 0.46). Complete loss of natural teeth among older adults in England was associated with loneliness, even after accounting for measured time-varying and (un)measured time-invariant confounders. Retaining natural teeth may reduce the risk of loneliness.

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完全丧失天然牙齿与孤独感:固定效应分析
口腔健康的社会心理特性已有报道。本研究旨在通过使用固定效应分析来控制混杂因素,包括未测量的时间不变因素,从而研究天然牙齿完全缺失对孤独感的因果效应。研究分析了至少连续两次参加英国老龄化纵向研究第 3 波(2006/2007 年)、第 5 波(2010/2011 年)和第 7 波(2014/2015 年)的老年人的数据(N = 18,682 个观测值,来自 7,298 人)。采用固定效应线性回归分析法研究了天然牙齿完全缺失与孤独感得分(3 至 9 分)之间的关系,并调整了随时间变化的混杂因素,包括社会人口学特征和健康特征。在第 3、5 和 7 波中,全口牙齿缺失率分别为 12.7%、12.8% 和 10.6%。在任何两个连续波次中转变为全口缺牙的人的孤独感得分增加了 0.27(95% 置信区间 [CI] 0.03,0.52),高于保持天然牙齿的人的孤独感得分(-0.03;95% CI -0.05,-0.01)。调整了时变混杂因素的固定效应分析表明,完全丧失天然牙齿与孤独感得分增加 0.31(95% CI 0.17,0.46)之间存在显著关联。即使考虑了测量的时变混杂因素和(未)测量的时间不变混杂因素,英格兰老年人完全丧失天然牙齿仍与孤独感有关。保留天然牙齿可降低孤独的风险。
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