Hou Xin-Zheng, Wu Qian, Lv Qian-Yu, Yang Ying-Tian, Li Lan-Lan, Ye Xue-Jiao, Yang Chen-Yan, Lv Yan-Fei, Wang Shi-Han
Department of Cardiovascular Diseases, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China.
College of Management, Fudan University, Shanghai, China.
Front Nutr. 2024 Jul 15;11:1440025. doi: 10.3389/fnut.2024.1440025. eCollection 2024.
There is limited research on the relationship between the frequency of plant-based food intake and the risk of cardiovascular disease (CVD) among elderly Chinese. This study aims to evaluate the association between plant-based dietary index (PDI) and CVD risks, providing evidence for elderly Chinese to reduce CVD risks by increasing the frequency of plant-based food consumption.
This study analyzed data from the Chinese Longitudinal Healthy Longevity Survey (CLHLS) 2011-2018, employing a multivariate modified Poisson regression model, trend tests, and restricted cubic spline (RCS) analysis to assess the linear and non-linear relationship between the PDI and CVD risks. Subgroup analyses and interaction tests were conducted to evaluate the robustness and population-specificity of the results.
This study included a total of 1,414 elderly Chinese, and at the end of follow-up, 487 participants had developed CVD. The multivariate modified Poisson regression model revealed a negative association between PDI and CVD risks [RR = 0.983, 95%CI = (0.970, 0.997)]. Similarly, the multivariate trend test ( = 0.031) and RCS analysis ( for nonlinear = 0.600) indicated a linear relationship between PDI and CVD risks. Subgroup analyses showed that the relationship between PDI and CVD risk was not influenced by gender, BMI, smoking, alcohol use, or exercise.
The PDI was negatively correlated with CVD risks, indicating that increasing the frequency of plant-based food intake in the diet may reduce CVD risks among elderly Chinese.
关于中国老年人植物性食物摄入频率与心血管疾病（CVD）风险之间的关系，相关研究有限。本研究旨在评估植物性饮食指数（PDI）与CVD风险之间的关联，为中国老年人通过增加植物性食物消费频率来降低CVD风险提供证据。
本研究分析了2011 - 2018年中国健康与养老追踪调查（CLHLS）的数据，采用多变量修正泊松回归模型、趋势检验和受限立方样条（RCS）分析来评估PDI与CVD风险之间的线性和非线性关系。进行亚组分析和交互检验以评估结果的稳健性和人群特异性。
本研究共纳入1414名中国老年人，随访结束时，487名参与者发生了CVD。多变量修正泊松回归模型显示PDI与CVD风险呈负相关[RR = 0.983，95%CI =（0.970，0.997）]。同样，多变量趋势检验（= 0.031）和RCS分析（非线性= 0.600）表明PDI与CVD风险之间存在线性关系。亚组分析表明，PDI与CVD风险之间的关系不受性别、BMI、吸烟、饮酒或运动的影响。
PDI与CVD风险呈负相关，表明增加饮食中植物性食物的摄入频率可能降低中国老年人的CVD风险。
