. Author manuscript; available in PMC: 2015 Feb 1.

Published in final edited form as: Osteoarthritis Cartilage. 2013 Dec 20;22(2):226–234. doi: 10.1016/j.joca.2013.12.005

Table 1.

Mean and 95% confidence intervals for age, BMI, function, and strength parameters, and the gender distribution for subjects with and without radiographic knee osteoarthritis.

		Control	Osteoarthritis	P
Age (years)		50.7 (48.4, 53.1)	57.7 (54.3, 61.1)	0.001
BMI (kg/m²)		24.1 (23.2, 25.0)	26.9 (23.5, 30.2)	0.032
Gender (M:F)		28:38	15:15	0.489^*
KOOS	Symptoms	90.4 (87.7, 93.2)	81.9 (76.0, 87.8)	0.014^†
	Pain	90.6 (87.5, 93.8)	78.8 (71.4, 86.3)	0.003^†
	Activities of Daily Living	94.7 (92.3, 97.1)	84.3 (77.5, 91.1)	0.006^†
Stair Climbing Test (sec)		11.4 (10.9, 12.0)	12.0 (10.7, 13.3)	0.865^†
6 Minute Walk Test (m)		636.7 (613.0, 660.4)	596.2 (563.3, 630.0)	0.569^†
Quadriceps	Isometric Torque (Nm/kg)	1.39 (1.29,1.49)	1.12 (0.99, 1.26)	0.005^#
Quadriceps	Isokinetic Torque at 120°/sec (Nm/kg)	0.92 (0.86,0.98)	0.74 (0.66, 0.83)	0.001^#
Hamstrings	Isometric Torque (Nm/kg)	0.67 (0.63,0.72)	0.62 (0.55,0.69)	0.452^#
Hamstrings	Isokinetic Torque at 120°/sec (Nm/kg)	0.65 (0.61, 0.70)	0.60 (0.53, 0.67)	0.172^#

P value from the Chi-Square test

^†

- adjusted for age, gender, BMI

adjusted for age and gender.