Table 1. Age, weight, height, Body Mass Index values of the patients.

	All patients (n=75)*			Group 1 (n=25)*			Group 2 (n=25)*			Group 3 (n=25)*
	n	%	Mean±SD	n	%	Mean±SD	n	%	Mean±SD	n	%	Mean±SD	F	p
Age (year)			33.8±7.9			36.0±8.0			31.7±8.5			33.8±6.7	1,860	0.163#
BMI			25.1±3.4			25.6±2.6			24.2±3.3			25.2±3.9	1,947	0.150#
Height			1.7±0.1			1.7±0.1			1.7±0.1			1.7±0.1	1,662	0.197#
Weight			71.5±13.7			70.0±10.7			69.0±13.5			75.4±16.0	1,650	0.199#
Gender													c2
Female	23	53,5		11	68,7		7	50		5	38,5		2,746	0.253*
Male	20	46,5		5	31,3		7	50		8	61,5
* The number of knees; SD: Standard deviation; # One-way ANOVA; * Pearson’s chi-square test; BMI: Body mass index.