Table 1.

Statistical values of the relative percentage of telomere loss in peripheral blood leukocytes and analysis of significant differences in subjects with incident or nonincident knee OA, as well as individuals with mtDNA cluster HV or JT.

			n	Q1	Q2	Q3	P^*

Subjects	Nonincident		86	19.39	27.79	39.31	< 0.001
	Incident		39	35.47	41.36	44.22
mtDNA cluster	HV	Nonincident	48	23.91	32.72	44.41	0.08
		Incident	30	35.88	41.43	44.27
	JT	Nonincident	38	16.82	21.83	27.05	0.003
		Incident	9	25.60	36.49	44.91

Quartiles (Q1: lower, Q2: median, Q3: upper) are indicated.
↵* Mann-Whitney U test. mtDNA: mitochondrial DNA; OA: osteoarthritis.