Table 3. Age at menarche distribution of patients studied.

Age at menarche in years	Group A		Group B		Group C
	No.	%	No.	%	No.	%
≤11	6	5.8	4	4.0	21	21.0
12–13	47	45.2	48	48.0	61	61.0
≥14	51	49.0	48	48.0	18	18.0
Total	104	100.0	100	100.0	100	100.0
Median ±SE	13.0±0.1		13.0±0.1		12.0±0.1