ALB and depressive symptom measurement: Propensity score matching, as well as Cox regression models addressingpotential confounders: age, gender, ethnicity, education, prior cardiovascular events, hypertension, depression, current smoking, alcohol intake, albumin/creatinine ratio >30 mg/g, diabetes and cardiovascular drugs, BMI, waist-hip ratio, HbA1c, fasting plasma glucose, lipids, serum creatinine, mini-mental status, prior diabetes mellitus