Table 2

Incidence rates (IRs) per 100 000 person-years and IR ratios of high-grade cervical dysplasia and cervical cancer*

SID (N=133 333)Non-SID (N=533 332)
Cases (n)Person-years, mean (SD)IR (95% CI)Cases (n)Person-years, mean (SD)IR (95% CI)
All patients2592.1 (1.8)94.2 (83.4 to 106.4) 8182.1 (1.9)73.4 (68.5 to 78.6)
SID subcohorts
 Inflammatory bowel disease (n=25 176)592.1 (1.9)110.3 (85.4 to 412.3)
Psoriasis (n=34 665)582.0 (1.8)82.2 (63.5 to 106.3)
Rheumatoid arthritis (n=58 979)1022.1 (1.8)83.3 (68.6 to 101.1)
Systemic lupus erythematosus (n=14 513)402.0 (1.8)141.1 (103.5 to 192.4)
  • *SID and non-SID cohorts are age- and index date-matched.

  • SID, systemic inflammatory disease.