Table 1.

Comparison of group 1 and group 2 with plaque scoresat different time intervals by Mann–Whitney U test

Groups	Baseline		1 Week		1 Month		Changes from baseline to
							1 Week		1 Month
	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD
Group 1	2.06	0.35	1.37	0.40	0.62	0.21	0.68	0.39	1.43	0.32
Group 2	1.76	0.48	1.07	0.43	0.52	0.15	0.69	0.36	1.24	0.43
Total	1.91	0.44	1.22	0.44	0.57	0.19	0.69	0.37	1.34	0.39
% of change in group 1							33.17%#, P = 0.0001*		69.66%#, P = 0.0001*
% of change in group 2							39.11%#, P = 0.0001*		70.49%#, P = 0.0001*
Z-value	−2.8531		−2.9830		−2.5019		−0.2165		−1.8138
P-value	0.0043*		0.0029*		0.0124*		0.8286		0.0697

*P < 0.05 indicates significant at 5% level

#Applied Wilcoxon matched pairs test