Table 10.

Comparison of tongue coating before and after treatment

Group	$n$	Before and after treatment	Coating on tongue			In		Intergroup
			Thin white	White greasy	Other	$X^2$	$P$	$X^2$	$P$
Treatment	40	Before treatment	15	20	5	0.235	0.892	0.985	0.613
		After treatment	14	20	6
Control	40	Before treatment	15	22	3	0.393	0.822
		After treatment	14	21	5