Objective: To establish reference values for carotid intima-media thickness (CIMT) of adult dwellers in Shenzhen City. Methods: The study was conducted based on the Shenzhen heart failure epidemiological survey from 2021 to 2022. In this survey, residents aged 18 years and above in Shenzhen were selected by using a multi-stage stratified random sampling method. General information, cardiovascular disease (CVD) related behavior and carotid ultrasound examination and etc. were collected from the participants. People with CVD factors, a history of atherosclerotic cardiovascular disease, carotid plaque or having no carotid ultrasound examination results were excluded. The parameter regression model based on fractional polynomial was used to establish the reference values of CIMT by age and sex. Results: A total of 2 163 healthy individuals were enrolled in the final analysis, including 576 males (26.6%) and 1 587 females (73.4%). The fractional polynomial regression of the CIMT mean and standard deviation was obtained. For men, the regression was meanCIMT=0.324 7+0.006 9×age and SDCIMT=0.076 9+0.001 2×age. For women, the regression was meanCIMT=0.354 9+0.005 4×age and SDCIMT=0.041 6+0.002 0×age. Conclusion: The age and sex reference values for CIMT of adult people in Shenzhen established in this study could provide the latest reference standards for early screening of subclinical CVD.
目的： 建立适合深圳市成年居民颈动脉内-中膜厚度（CIMT）的正常值范围。 方法： 本研究数据源自2021—2022年开展的深圳市心力衰竭流行病学调查。该调查采用多阶段分层随机抽样方法收集深圳市18岁及以上常住居民的一般信息、心血管疾病（CVD）相关行为以及颈动脉超声检查等资料。数据分析排除具有CVD危险因素、动脉粥样硬化性心血管病史、颈动脉斑块，以及无颈动脉超声检查结果的调查对象，并利用分数多项式回归模型估计年龄、性别的CIMT正常值范围。 结果： 本研究共纳入2 163名成年居民，其中男性576名（26.6%），女性1 587名（73.4%）。男性CIMT均值（mean）和标准差（SD）的分数多项式回归模型分别为meanCIMT=0.324 7+0.006 9×年龄，SDCIMT=0.076 9+0.001 2×年龄；女性分别为meanCIMT=0.354 9+0.005 4×年龄，SDCIMT=0.041 6+0.002 0×年龄。 结论： 本研究建立了深圳市成年居民年龄、性别CIMT的正常值范围，为亚临床CVD的早期筛查提供了最新数据依据。.