Table 1. Demographic profile of patients.

P-value of <0.001: highly significant (chi-square test)

OA: osteoarthritis

Patient's profile		Case, n (%)		Control, n (%)	P-value
Sex	Male	15 (30)		31 (62)
	Female	35 (70)		19 (38)
Age group	≤50 years	14 (28)		33 (66)	<0.001
	>50 years	36 (72)		17 (34)
Grade of OA	Grade 3 OA	≤50 years	9 (36)	-	0.208
		>50 years	16 (64)	-
	Grade 4 OA	≤50 years	5 (20)	-
		>50 years	20 (80)	-