Table 2.

Comparison of Visual analog scale pain score.

Sample size		Groups		Comparisons between group
		129	129	p-Value	q-Value
Type of hyaluronan injections		Chemically cross-linked	Avian derived
VAS		CCH	ADH
BL		58.82±1.4	58.58±1.49	0.876	N/A
30 days	Pain score	24.22±1.43	35.47±2.87	<0.0001	46.216
	p-Value	<0.0001	<0.0001
	q-Value	170.35	89.051
90 days	Pain score	23.45±1.67	35.02±1.89	<0.0001	56.178
	p-Value	<0.0001	<0.0001
	q-Value	174.17	90.733
180 days	Pain score	21.6±2.14	34.33±1.96	<0.0001	54.803
	p-Value	<0.0001	<0.0001
	q-Value	183.29	93.39

VAS – visual analog scale; BL – baseline. Data were represented as mean ±SD. Wilcoxon test (within the group) or independent t-test (between group) following Bonferroni adjustment was used for statistical analysis. A p<0.05 and q>2.652 were considered as significant. Within-group p-value was respect to BL. A 0: No pain and 100: Worst possible pain. N/A – not applicable.