Table 2.

Comparison of serum MMP-13 levels between different age groups of patients

	<  60 years (n = 29)	≥ 60 years (n = 48)	p value
MMP-13 levels (pg/ml)	304.0 (252.0, 404.5)	347.5 (271.3, 484.3)	0.17
T1, n (%)	15 (51.7%)	22 (45.8%)	0.40
T2, n (%)	7 (24.1%)	14 (29.2%)	0.40
T3, n (%)	7 (24.2%)	12 (25.0%)	0.40
Gender (M/F)	20/9	29/19	0.45

MMP-13 levels were expressed as median (first quartile, third quartile). M: male; and F: female