Amount of liquor	Group						X² P
Amount of liquor	Severe		Moderate		Mild		X² P
Normal	9	81.8	22	95.7	39	97.5	4.22 0.121
Diminished	2	18.2	1	4.3	1	2.5	4.22 0.121
Total	11	100.0	23	100.0	40	100.0