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. Author manuscript; available in PMC: 2010 Sep 15.
Published in final edited form as: Arthritis Rheum. 2009 Sep 15;61(9):1210–1217. doi: 10.1002/art.24541

Table 1.

Baseline Characteristics for the Study of Incident Radiographic Tibiofemoral Osteoarthritis (OA) (N=1617 participants, 2519 knees.)

Age
(years)		 Body Mass
Index
(BMI)
(kg/m2)		 Bone
Mineral
Density
(BMD)
Femoral
Neck
(g/cm2)		 Knee
Extensor
Strength
(KES, N•m)		 Hamstring:
Quadriceps
(H:Q) Ratio
(% <0.6)		 Physical
Activity Scale
for the
Elderly
(PASE) score
Men
N=680
(1054 knees) 		61.0 ± 7.9 29.8 ± 4.7 0.9 ± 0.1 130.8 ± 43.1 51.7% 209.7 ± 97.9
Women
N=937
(1465 knees) 		61.7 ± 7.8 29.3 ± 5.5 0.8 ± 0.1 76.0 ± 25.6 58.3% 164.5± 78.6
p-value 0.1039 0.0277 <0.0001 <0.0001 0.0076 <0.0001
*

Mean±SD except as indicated