Research Article

Cancer in ANCA-Associated Glomerulonephritis: A Registry-Based Cohort Study

Table 3

Studies on cancer incidence in patients with AAV.

CharacteristicHeijl et al. (2011)Zycinska et al. (2013)Rahmattulla et al. (2015)Van Daalen et al. (2016)This studyTotal

Study period1995–20071990–20081991–20132000–20141988–2012
Number of patients5351171383234191532
Cumulative person-years2650NR1339180230108801
Number of observed cancers5015854541236
Number of expected cancers31.723.837.5137.5
SIR (95% CI)1.58 (1.17 to 2.08)2.50 (1.20 to 2.90)2.21 (1.64 to 2.92)1.89 (1.38 to 2.53)1.09 (0.81 to 1.49)1.72 (1.51 to 1.95)

All non-NMSC sites
Number of observed cancers35242034122
Number of expected cancers25.918.3335.4100.8
SIR (95% CI)1.30 (0.90 to 1.80)  (0.97 to 3.57)1.46 (0.93 to 2.17)1.09 (0.67 to 1.69)0.96 (0.69 to 1.34)1.21 (1.01 to 1.45)

Not reported; calculated by the authors of this study; SIR, standardised incidence ratio; 95% CI, 95% confidence interval; NR, not reported; NMSC, nonmelanoma skin cancer.