Table 2.

Mean and median breast bud diameter (mm) by sex and nominal age.

	Girls			Boys
Nominal age	No.	Mean	Median	No.	Mean	Median
< 48 hr	6	9.8	10.3	6	8.0	8.0
1 week	6	9.6	8.5	6	10.2	9.3
2 weeks	6	0.0	0.0	6	7.5	8.0
3 weeks	6	3.8	0.0	6	4.2	2.5
1 month	7	5.1	0.0	7	1.3	0.0
3 months	7	2.0	0.0	6	0.0	0.0
6 months	6	2.3	0.0	7	0.0	0.0