. 2010 Jun;20(2):160–166.

Table 1.

Comparison between percentile values proposed by Tanner and our data and delta values (Δ) for breast development at Tanner stage 2 (B2) and pubic hair development at Tanner stage 2 (P2) in girls

Girls	Percentile	B2 Age (yr)	Δ (yr)	P2 Age (yr)	Δ (yr)
Our data	3^rd	6.2	2.9	7.4	0.8
Tanner	3^rd	9.1	2.9	9.2	0.8
Our data	10^th	7.4	2.4	8.2	1.7
Tanner	10^th	9.8	2.4	9.9	1.7
Our data	25^th	8.6	1.8	9.2	1.5
Tanner	25^th	10.4	1.8	10.7	1.5
Our data	50^th	9.7	1.5	10.3	1.2
Tanner	50^th	11.2	1.5	11.5	1.2
Our data	75^th	10	1.9	11.4	0.9
Tanner	75^th	11.9	1.9	12.3	0.9
Our data	90^th	12.8	-0.2	12.4	0.6
Tanner	90^th	12.6	-0.2	13.0	0.6
Our data	97^th	13.6	-0.4	13.2	0.6
Tanner	97^th	13.2	-0.4	13.8	0.6