Table 1. General characteristics of the recruited control and case groups.

	Control groups		Case groups		p value#
	Normal healthy (n = 30)	Disease Control (n = 30)	pKOA (n = 30)	sKOA (n = 16)
Mean Age (years)	56.8± 5.242	54.23± 5.380	55.80± 3.428	56.81± 7.441	0.251
Gender (% of female)	96.67	96.67	96.67	81.25	0.112
BMI	23.36±3.55	22.33±6.07	22.94±2.39	23.62±5.45	0.735

pKOA–primary knee osteoarthritis; sKOA–secondary knee osteoarthritis.

^#p value—for the comparison between control and case groups (Kruskal-Wallis H test).