Table 1.

Characteristics of the study population by T. vaginalis (Tv) serostatus in controls and by case-control status.

	Controls only		Cases vs. controls
	Tv negative (n=139)	Tv positive (n=42)	Cases (n=146)	Controls (n=181)
Characteristics
Age at reference date* (years), mean (std)	58.8 (7.4)	59.6 (6.5)	58.8 (7.4)	59.0 (7.2)
Family history of prostate cancer, %	11	10	14	11
Race, %
Caucasian	94	86	89	92
African American	6	14	11	8
Prostate cancer screening history#, %
Yes	90	83	77	88
Number of lifetime female sexual partners^, %
1	28	26	18	28
2 to 4	23	21	27	22
5 to 14	25	29	30	26
≥15	25	24	26	24
Smoking status, %
Current	13	19	19	14
Former	41	48	49	43
Never	46	33	32	43
BMI (kg/m2), mean (std)	27.1 (3.7)	27.2 (3.8)	27.1 (4.1)	27.1 (3.7)

^*Date of diagnosis for cases and similar assigned date for controls

^#Digital rectal exam or PSA test within 5 years before reference date

^{^}<4% of men reported any male sexual partners