. Author manuscript; available in PMC: 2013 Jan 1.

Published in final edited form as: J Urol. 2011 Nov 16;187(1):92–96. doi: 10.1016/j.juro.2011.09.060

TABLE 1.

Baseline characteristics of Olmsted County Study of Urinary Symptoms and Health Status among Men and Flint Men’s Health Study.

Variable	OCS	FMHS	P value^*
N	420	328
Age (mean ± SD)	58.7 ± 10.4	57.4 ± 10.4	0.24
Family history of prostate cancer (N (%))	65 (15.5)	55 (16.8)	0.63
	Median (Q1, Q3)	Median (Q1, Q3)
Prostate volume (cc)	26.7 (21.7, 35.0)	26.2 (20.1, 33.4)	0.06
PSA (ng/mL)	1.2 (0.8, 1.8)	1.0 (0.5, 1.7)	0.001
[-2]proPSA (pg/mL)	5.6 (3.9, 7.7)	6.3 (4.1, 8.9)	0.01

SD: Standard Deviation, Q1: 25^th percentile, Q3: 75^th percentile

Rank-sum P value reported for continuous variables, chi-square P value reported for dichotomous variables.