Association between Secondary and Primary Sjögren’s Syndrome in a Large Collection of Lupus Families

Table 1

Distribution of secondary Sjögren’s syndrome among relatives of those with systemic lupus erythematosus with and without primary Sjögren’s syndrome.

	SLE-unaffected relatives
	pSS	No pSS
SLE with sSS	18	530
SLE without sSS	53	6789

= 34; ; odds ratio = 4.4.
sSS: secondary Sjögren’s syndrome; SLE: systemic lupus erythematosus.