Baseline demographic, social, and clinical characteristics of the cohort, divided into sLG1M tertiles.

Data are presented as number (%) for categorical variables, while continuous variables are presented as median (IQR). DM = diabetes mellitus; COPD = chronic obstructive pulmonary disease; CVD = cerebrovascular disease; IHD = ischaemic heart disease; PVD = peripheral vascular disease; CCI = Charlson’s comorbidity index; IMD = index of multiple deprivation; BMI = body mass index; PWV = pulse wave velocity; PP = pulse pressure; CKD-EPI = Chronic Kidney Disease Epidemiology Collaboration; eGFR = estimated glomerular filtration rate; ACR = albumin creatinine ratio; CRP = C-reactive protein; cFLC = combined free light chains.

分类变量以例数（百分比）形式呈现，连续变量以中位数（四分位间距，interquartile range, IQR）形式呈现。其中，DM：糖尿病（diabetes mellitus）；COPD：慢性阻塞性肺疾病（chronic obstructive pulmonary disease）；CVD：脑血管疾病（cerebrovascular disease）；IHD：缺血性心脏病（ischaemic heart disease）；PVD：外周血管疾病（peripheral vascular disease）；CCI：查尔森合并症指数（Charlson’s comorbidity index）；IMD：多重剥夺指数（index of multiple deprivation）；BMI：体重指数（body mass index）；PWV：脉搏波速度（pulse wave velocity）；PP：脉压（pulse pressure）；CKD-EPI：慢性肾脏病流行病学合作组（Chronic Kidney Disease Epidemiology Collaboration）；eGFR：估算肾小球滤过率（estimated glomerular filtration rate）；ACR：白蛋白肌酐比值（albumin creatinine ratio）；CRP：C反应蛋白（C-reactive protein）；cFLC：联合游离轻链（combined free light chains）。