Table 3. Characteristics of two cohort studies of subfertility and testicular cancer incidence.

First author	Year (Ref. No)	Country	Excluded Cryptorchidism	Study Population	Follow-up Period	Estimated Standardized Incidence Ratios (95% CI)	Controlled Variables
Jacobsen R	2000 (13)	Europe (Danish)	NA*	Exposed group: 32,442 subjects with a semen analysis (No. of cases: 89)	1963–1995	1.60 (1.30–1.90)	Age
				Comparison group: Danish population
Raman JD	2005 (14)	USA	Yes	Exposed group: 3,847 subjects with abnormal semen analysis (No. of cases: 8)	1990–2000	18.30 (18.00–18.80)	Age, race
				Comparison group: American population

^*NA, not available.