ORs with 95% CIs of developing rheumatoid arthritis (RA) overall, anti-citrullinated protein antibody (ACPA)-positive RA and ACPA-negative RA, among women with occupational exposure to textile dust compared with women unexposed to textile dust in the Malaysian Epidemiological Investigation of Rheumatoid Arthritis study
| Cases/controls | OR (95% CI)* | |
|---|---|---|
| Occupational exposure to textile dust | ||
| RA overall | ||
| Unexposed | 622/647 | Referent |
| Ever exposed | 41/15 | 2.8 (1.6 to 5.2) |
| ACPA-positive RA | ||
| Unexposed | 399/647 | Referent |
| Ever exposed | 23/15 | 2.5 (1.3 to 4.8) |
| ACPA-negative RA | ||
| Unexposed | 223/647 | Referent |
| Ever exposed | 18/15 | 3.5 (1.7 to 7.0) |
*Adjusted for age group, geographical area, educational levels and ethnicity.