Table 2.

Comparison of group 1 and group 2 with gingival index scores at 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	1.83	0.50	1.11	0.63	0.64	0.36	0.72	0.30	1.19	0.28
Group 2	1.90	0.50	1.36	0.62	0.72	0.40	0.54	0.31	1.18	0.33
Total	1.86	0.50	1.23	0.63	0.68	0.38	0.63	0.32	1.18	0.30
% of change in group 1							39.57%#, P = 0.0001*		64.88%#, P = 0.0001*
% of change in group 2							28.47%#, P = 0.0001*		62.01%#, P = 0.0001*
Z-value	−0.8756		−1.8283		−0.8564		−2.6654		−0.6207
P-value	0.3812		0.0675		0.3918		0.0077*		0.5348

*P < 0.05 indicates significant at 5% level

#Applied Wilcoxon matched pairs test