Table 4.

Annual incidence rate of incident malignancies after “start date” (excluding basal cell carcinomas)

	Person-years	Number of outcomes	Incidence rate (95% CI) per 100 person-years
First year
Unexposed time	24,040	163	0.68 (0.58–0.79)
Exposed time	8,959	74	0.83 (0.66–1.04)
Second year
Unexposed time	23,605	245	1.04 (0.92–1.18)
Exposed time	7,364	75	1.02 (0.81–1.28)
Third year
Unexposed time	21,017	259	1.23 (1.09–1.39)
Exposed time	5,229	52	0.99 (0.76–1.30)
Fourth year
Unexposed time	15,568	194	1.25 (1.08–1.43)
Exposed time	3,829	42	1.10 (0.81–1.48)
Fifth year and over
Unexposed time	42,101	499	1.19 (1.09–1.29)
Exposed time	10,654	116	1.09 (0.91–1.31)