Periodontal Status amongst Substance Abusers in Indian Population

Table 4

Correlation between OHI-S score with Russell’s Index and Gingival Bleeding Index.

Group		Correlation between OHI-S score verses
		Russell’s Index	Gingival Bleeding Index
Control	Correlation coefficient	0.721	0.371
	P value	<0.001	<0.001
	N	250	250
Substance abusers	Correlation Coefficient	0.479	−0.200
	P value	<0.001	0.001
	N	250	250