Sociodemographic characteristics of 3297 SICCA participants*
| Age, years; median (range) | 54 (21–90) |
| Women, % | 3001 (91) |
| Ethnicity, no. | |
| Caucasian | 1825 (55) |
| Asian | 866 (26) |
| Hispanic | 307 (9) |
| African | 81 (2) |
| Native American | 30 (1) |
| Multirace | 113 (2) |
| Unspecified | 75 (2) |
| Recruitment site | |
| USA | 1233 (37) |
| Denmark | 588 (18) |
| Argentina | 431 (13) |
| Japan | 351 (11) |
| China | 297 (9) |
| UK | 292 (9) |
| India | 105 (3) |
| Smoking | |
| Current | 319 (10) |
| Former | 1053 (32) |
| Never | 1918 (58) |
*Values are the number (%), unless otherwise stated; data are not available regarding smoking status for seven participants.
SICCA, Sjögren's International Collaborative Clinical Alliance.