Type D personality in the general population: a systematic review of health status, mechanisms of disease, and work-related problems.
BACKGROUND
The objective was to review all available literature concerning Type D (distressed) personality among the general population and to discuss its implications for research on health status, disease-promoting mechanisms and work-related problems in non-clinical populations.


METHODS
A computerized search of the literature was performed independently and in duplicate by both investigators on December 21st, 2009. Published research reports were included if they studied Type D personality among the general population. Nineteen articles were selected and they were subjected to an 11-item standardised quality checklist by both investigators.


RESULTS
The methodological quality of the selected studies was adequate to high. The studies included in this review showed that the presence of Type D characteristics had a negative impact on mental health status (more symptoms of depression, anxiety, post-traumatic stress disorder, mental distress, passive coping, and less social support) and physical health status (more somatic complaints, lower health status, more influenza-like illness reporting). Other studies reported on behavioral and biological mechanisms of disease in apparently healthy individuals with a Type D personality. Finally, some studies also showed a negative effect of Type D personality on work-related problems (higher absence-leave, higher levels of vital exhaustion and burnout, and more work-related stress).


CONCLUSIONS
Type D personality is a vulnerability factor for general psychological distress that affects mental and physical health status and is associated with disease-promoting mechanisms and work-related problems in apparently healthy individuals.
Mols
Floortje
F
CoRPS - Center of Research on Psychology in Somatic Diseases, Department of Medical Psychology, Tilburg University, The Netherlands. F.mols@uvt.nl
Denollet
Johan
J
D004194:Disease / Q000523:psychology*; D005260:Female; D006304:Health Status; D006801:Humans; D008297:Male; D010551:Personality; D011795:Surveys and Questionnaires; D013694:Temperament; D014937:Work / Q000523:psychology*