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Several personality traits increase the risk for atherosclerotic cardiovascular disease. Because many of these traits are correlated, their associations with disease risk could reflect shared variance, rather than unique contributions of each trait. We examined a higher‐order personality trait of Stability as related to preclinical atherosclerosis and tested whether any such relationship might be explained by correlated variation in cardiometabolic risk factors.

Among 798 community volunteers, lower‐order traits of Neuroticism, Agreeableness, and Conscientiousness were modeled as latent variables (from self‐ and informant ratings) and used to estimate the second‐order factor, Stability. Cardiometabolic risk was similarly modeled from indicators of glycemic control, blood pressure, adiposity, and lipids. Carotid artery atherosclerosis was measured as intima‐media thickness (IMT) by duplex …