LDFA	Groups				Total
	Group A		Group B		Total
	No.	%	No.	%	No.	%
Normal (90˚ ± 3˚)	54	78.3	27	67.5	81	74.3
Abnormal	15	21.7	13	32.5	28	25.7
Total	69	63.3	40	36.7	109	100
P value	0.215
Χ²	1.536
Significance	NS