Table 4.

Comparison of tongue images of patients before treatment

Group	Number of cases	Light	Light dark tongue	Other	Thin white	White and greasy tongue coating	Other
Treatment	40	20	15	5	12	25	3
Control	40	22	12	6	15	20	5
$X^2$			0.117			0.238
$P$			0.946			0.888