TableĀ 3

Relative risk (RR) for rheumatoid arthritis (RA) diagnosis associated with anti-citrullinated protein antibody positivity

TestRR(95% CI*)(95% CI)
Anti-CCP2 test64.0(46.4 to 88.2)(46.7 to 87.8)
High anti-CCP2 cut-off94.2(69.7 to 127.4)(70.1 to 126.7)
  • All estimates and CIs were adjusted for sex.

  • *CI adjusted to account for the twin clustering of data with a general estimation equation model.