The prevalence of PSS in this Norwegian population of Caucasians is lower than previously reported when less stringent criteria for identifying PSS were used, but is in line with more recent studies using the same criteria and methods as in this study.

Higher frequency of TMJ and salivary gland dysfunction in RA-patients compared with controls has been demonstrated. RA disease activity is associated with hyposalivation and TMJ dysfunction.

The point prevalence of pSS was approximately seven times higher in the elderly population aged 71-74 years compared to individuals aged 40-44 years, regardless of the classification criteria used.