Table 1.

Comparison of Plaque index and Gingival index scores with severity of DR. SD—standard deviation.

Plaque Index (Silness and Loe)	N	Mean	SD	Min.	Max.	‘F’ Value	p Value
Group 1	55	1.345	0.5381	0.4	2.3	40.633	<0.001
Group 2	44	1.530	0.5398	0.4	2.6
Group 3	52	2.287	0.4606	0.6	3.0
Group 4	49	1.359	0.4721	0.5	2.0
Gingival index (Loe and Silness)
Group 1	54	1.504	0.4148	0.7	2.1	61.554	<0.001
Group 2	43	1.730	0.3668	0.7	2.6
Group 3	52	2.381	0.2552	1.7	2.9
Group 4	49	1.622	0.3853	0.8	2.6