Table 2.

The change in mean MMP-9 conc. at different intervals.

	MMP-9			Test valuea	P value	Sig.
	Baseline	1 month	3 months
	Mean ± SD	Mean ± SD	Mean ± SD
Group I	1088.41 ± 523.45	741.17 ± 340.45	515.83 ± 220.17	17.081	≤0.001	HS
Group II	1330.45 ± 539.33	560.34 ± 230.45	330.83 ± 142.50	67.734	≤0.001	HS
Test valueb	1.764	-2.409	-3.864
P value	0.083	0.019	≤0.001

P value > 0.05: nonsignificant; P value < 0.05: significant; P value < 0.01: highly significant. ^aRepeated measure ANOVA test; ^bindependent t-test.