Table 1.
Demographic characteristics of female SS and sicca controls from the SICCA registry
| SS | Sicca Control | p | ||
|---|---|---|---|---|
| n=1320 | n=1360 | |||
| Age (mean, SD) | 52.04(13.5) | 54.04(12.93) | 0.0001 | |
| n(%) | n(%) | |||
| Age (Years) | 18–39 | 254(19) | 199(15) | 0.01 |
| 40–59 | 648(49) | 678(50) | ||
| 60–79 | 401(30) | 461(34) | ||
| 80+ | 17(1) | 20(1) | ||
| Ethnicity* | Caucasian/Middle eastern | 569(43) | 879(65) | <0.001 |
| Hispanic/Latino | 141(11) | 171(13) | ||
| Native American | 37(3) | 52(4) | ||
| Asian/Pacific Islander | 530(40) | 222(16) | ||
| African Column | 42(3) | 34(3) | ||
| Tobacco* | Ever | 366(29) | 366(40) | <0.0001 |
| Never | 895(71) | 895(60) | ||
| Education | None | 22(2) | 13(1) | <0.0001 |
| Primary/grammar school | 168(13) | 199(15) | ||
| Some high school | 117(9) | 77(6) | ||
| Graduate from high school | 271(21) | 206(15) | ||
| Some college/university | 234(18) | 316(23) | ||
| Complete college/university | 508(38) | 549(40) | ||
| Employment* | Full-time | 480(36) | 394(29) | <0.0001 |
| Part-time | 185(14) | 189(14) | ||
| Homemaker full time | 216(16) | 178(13) | ||
| Retired | 274(21) | 320(24) | ||
| Student | 20(2) | 17(1) | ||
| Temporarily not working | 45(3) | 46(3) | ||
| Disability | 99(8) | 215(16) | ||
| Recruitment Site | Argentina | 154(12) | 208(15) | <0.0001 |
| China | 233(18) | 53(4) | ||
| Denmark | 161(12) | 284(21) | ||
| India | 50(4) | 22(2) | ||
| Japan | 182(14) | 110(8) | ||
| US | 421(32) | 563(41) | ||
| UK | 119(9) | 120(9) | ||
| Referral Source* | Sjögren’s clinic | 331(25) | 310(23) | 0.10 |
| Dentist | 111(8) | 127(9) | ||
| Rheumatologist | 376(29) | 378(28) | ||
| Ophthalmologist | 95(7) | 100(7) | ||
| Other doctor | 47(4) | 73(5) | ||
| Website | 145(11) | 144(11) | ||
| Advertisement | 48(4) | 46(3) | ||
| Support Group | 72(5) | 57(4) | ||
| Friend/Relative | 41(3) | 55(4) | ||
| Other | 50(4) | 65(5) |
*
Data missing for ethnicity (n=3), smoking (n=251), employment (n=2), referral source (n=9) categories