. Author manuscript; available in PMC: 2016 Sep 1.

Published in final edited form as: Osteoarthritis Cartilage. 2015 Apr 30;23(9):1595–1604. doi: 10.1016/j.joca.2015.04.023

Table 2.

Subject characteristics at time of baseline visit

Parameter	Subjects		p-value
Parameter	African American n = 100	Caucasian American n = 100	p-value
Age^ˆ	55.89±6.02	55.32±6.46	0.138
BMI^ˆ	29.20±4.02	29.16±3.81	0.816
Physical Activity Score (average PASE)^ˆ	151.2±80.4	167.1±78.7	0.160
Alignment^*
Neither	32(32.0)	32/98 (32.7)
Varus	16(16.0)	19/98 (19.4)	0.869
Valgus	52(52.0)	47/98 (48.0)
OA risk factors^*
History of knee injury	26(26.0)	31(31.0)	0.423
Knee symptoms in the past 12 months	47/99(47.5)	31/99 (31.3)	0.029^†
Family history of knee replacement surgery	15/99(15.2)	15/99(15.2)	0.842

^ˆ

Values are given as mean ± SD

Values are number (%)

OA osteoarthritis; BMI body mass index

^†

Statistically significant (p < 0.05)