Supporting data for ''Evaluating retinal and choroidal vascularity changes in active and passive smokers over 50 years old: a population-based study in Hong Kong''

The raw data include the demographic characteristics, systemic diseases and ocular information of the participants who were finally enrolled in the study. Additionally, the data include a sheet explaining the coding of different variables. These data were analysed to evaluate retinal and choroidal vascularity changes between non-smokers, active smokers and passive smokers, and to identify influence factors of choroidal vascularity index (CVI) such as age, gender, BMI and vascular systemic diseases. Additionally, the data were used to obtain reference values of normal CVI for Chinese ≥50 years of age in Hong Kong.

本研究的原始数据集涵盖最终纳入受试者的人口学特征、全身性疾病及眼部相关信息，同时附带一份阐释各变量编码规则的说明表。依托上述数据，本研究开展了两项核心分析：一是评估非吸烟者、主动吸烟者与被动吸烟者之间的视网膜及脉络膜血管特征差异；二是明确年龄、性别、体质量指数（Body Mass Index, BMI）及全身性血管疾病等因素对脉络膜血管指数（CVI）的影响作用。此外，本研究还通过该数据集获取了香港地区50岁及以上中国人群的正常CVI参考值。