Genetic and environmental contributions to the overlap between XXXX : a twin study in @entity3595 Lanka.

@entity1 @entity1109 @entity1295 @entity3595 @entity5815 @entity221
BACKGROUND: Somatic symptoms often co-occur with @entity1109 but this overlap is poorly understood. Some aspects of this overlap differ in the South Asian context, but it is not clear whether this is a reporting effect or an underlying difference in experienced @entity221 . METHODS: Home interviews were administered to 4,024 twins randomly selected from a population-based twin register in the Colombo district of @entity3595 Lanka (the CoTASS study). These included assessments of psychological, @entity5815 . The data were analyzed using factor analytic and quantitative genetic approaches. RESULTS: Confirmatory factor analysis showed that the symptoms from the three scales represented three separate dimensions, rather than all tapping into a single dimension. However, familial correlations among the data were most consistent with a common pathway model. This implies that a portion of the underlying vulnerability is common across @entity5815 . There were sex differences in the etiology of this model, with shared environmental and genetic influences playing different roles in @entity1 and @entity1 . CONCLUSIONS: There is a complex etiological relationship between @entity5815 . This is similar in @entity3595 Lanka to Western countries, but there may be a greater influence from the family environment, suggesting that care needs to be taken when generalizing research findings between countries. @entity1 who complain of certain @entity1295 or somatic symptoms may well also have @entity1109 , or may have genetic or environmental vulnerabilities to such problems.
