Table 4.

Age-specific standardized incidence ratios for selected cancers among a hospitalized cohort of patients with systemic lupus erythematosus (SLE), California, 1991–2002 (n = 30,478)^a

Age at hospitalization	Observed	Expected	SIR	95% Cl
Breast
<30	6	1.2	5.00	1.91–11.3
30–44	45	38.0	1.18	0.86–1.58
45–59	84	106.3	0.79	0.63–0.98
≥60	102	166.8	0.61	0.50–0.74
Lung
<30	6	1.2	5.00	1.91–11.3
30–44	45	38.0	1.18	0.86–1.58
45–59	84	106.3	0.79	0.63–0.98
≥60	102	166.8	0.61	0.50–0.74
Kidney
<30	6	1.2	5.00	1.91–11.3
30–44	45	38.0	1.18	0.86–1.58
45–59	84	106.3	0.79	0.63–0.98
≥60	102	166.8	0.61	0.50–0.74
NHL
<30	6	1.2	5.00	1.91–11.3
30–44	45	38.0	1.18	0.86–1.58
45–59	84	106.3	0.79	0.63–0.98
≥60	102	166.8	0.61	0.50–0.74
Vagina/Vulva
<30	6	1.2	5.00	1.91–11.3
30–44	45	38.0	1.18	0.86–1.58
45–59	84	106.3	0.79	0.63–0.98
≥60	102	166.8	0.61	0.50–0.74

^aSIR = standardized incidence ratio; CI = confidence interval