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Type A and type B personality constructs are behavioral constructs and are mostly self-reported.
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Most of the studies that have evaluated for type A and type D personality constructs have used self-assessment questionnaires in which there is every possibility that the subjects could have concealed hostility aspect.
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Another major limitation of these studies is the use of different scales for assessment of personality which makes comparison across these studies difficult. Furthermore, there is no consensus over which scale is the best scale to measure personality dimensions.
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The anger dimension of personality, if self-reported, can be inaccurate as the same anger can be considered as constructive by perpetrator and destructive by others.
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Psychological risk factors do not occur in isolation but cluster together within patients, complicating risk assessment.
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Comorbid depression has been found to be a confounder in the risk assessment of personality dimensions in subjects with CVDs.
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There is a possible chance of significant publication bias in the earlier studies (70s) in reporting the association between personality and CVDs. However, recent studies have now well identified these associations with the use of methodologically sound strategies.