■社会经济地位和脆弱之间的关系在文献中得到了广泛的研究,但尚不清楚是否存在因果关系。我们的目标是使用来自欧洲血统个体的大型全基因组关联研究的单核苷酸多态性摘要水平数据,评估六个社会经济特征与脆弱指数之间的因果关系。
■进行双样品MR。我们将逆方差加权(IVW)方法应用于初级估计,使用替代MR方法进行敏感性分析,以评估结果的稳健性。随后进行多变量MR以调整体重指数(BMI)的影响。最后,进行MRSteiger方向性测试以确认因果方向.
■IVWMR分析揭示了各种社会经济因素与虚弱指数之间的显着关联。具体来说,遗传预测年龄完成全日制教育(β=-0.477,95%置信区间[CI]:-0.634至-0.319)和税前平均家庭总收入(β=-0.321,95%CI:-0.410至-0.232)与虚弱指数呈负相关。另一方面,基因预测的工作涉及繁重的体力劳动(β=0.298,95%CI:0.113至0.484),工作主要涉及步行或站立(β=0.179,95%CI:0.013至0.345),招募时的汤森德剥夺指数(β=0.535,95%CI:0.285至0.785),社交隔离/孤独感(β=1.344,95%CI:0.834至1.853)与虚弱指数呈正相关。使用其他MR方法的敏感性分析和针对BMI进行调整的多变量MR分析产生了稳定的结果。MRSteiger方向性测试证实了因果方向。
■我们的研究结果强调了社会经济因素在影响虚弱风险方面的重要性。未来的研究应该集中在解开这些社会经济因素对脆弱的影响的途径上,最终目标是制定有针对性的策略来减轻脆弱的风险。
UNASSIGNED: The relationship between socioeconomic status and frailty has been extensively investigated in the literature, but it remains unclear whether a causal relationship exists. Our goal is to evaluate the causal relationship between six socioeconomic traits and the frailty index using summary-level data for single nucleotide polymorphisms from large genome-wide association studies with individuals of European ancestry.
UNASSIGNED: A two-sample MR was performed. We applied the inverse variance weighted (IVW) method for the primary estimate, with sensitivity analyses conducted using alternative MR methods to evaluate the robustness of the findings. A subsequent multivariable MR was undertaken to adjust for the effects of body mass index (BMI). Finally, the MR Steiger directionality test was performed to confirm the causal direction.
UNASSIGNED: The IVW MR analysis revealed significant associations between various socioeconomic factors and the frailty index. Specifically, genetically predicated age completed full time education (β = -0.477, 95% confidence interval [CI]: -0.634 to -0.319) and average total household income before tax (β = -0.321, 95% CI: -0.410 to -0.232) were negatively associated with the frailty index. On the other hand, genetically predicted job involves heavy manual or physical work (β = 0.298, 95% CI: 0.113 to 0.484), job involves mainly walking or standing (β = 0.179, 95% CI: 0.013 to 0.345), Townsend deprivation index at recruitment (β = 0.535, 95% CI: 0.285 to 0.785), and social isolation/loneliness (β = 1.344, 95% CI: 0.834 to 1.853) were positively associated with the frailty index. Sensitivity analysis using other MR methods and multivariable MR analysis adjusting for BMI yielded stable results. The MR Steiger directionality test confirmed the causal direction.
UNASSIGNED: Our findings highlight the importance of socioeconomic factors in affecting frailty risk. Future research should focus on unraveling the pathways through which these socioeconomic factors exert their effects on frailty, with the ultimate goal of developing targeted strategies to mitigate the risk of frailty.