| http://www.w3.org/ns/prov#value | - However, wehypothesized a priori that some factors, such as gender,age and social class, were most likely to be potential con-founders,whileotherfactors,suchassocialactivitiesandthe support of friends, were more likely to meet the defi-nition for a mediator.Potential mediating and confounding factors wereoperationalized according to previous analyses employ-ing the HUNT database [23???25].
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