Table 2.

Summary of onsets of testis/breast, pubic hair developments and onset of menarche by sex and puberty developmental group.

		Overall			Adrenarche-first			Concordance			Gonadarche-first
		Testis 2 (Breast 2)	Pubic Hair 2	Menarche	Testis 2 (Breast 2)	Pubic Hair 2	Menarche	Testis 2 (Breast 2)	Pubic Hair 2	Menarche	Testis 2 (Breast 2)	Pubic Hair 2	Menarche
Boys	N	109	109		12	12		82	82		15	15
	Mean	10.8	10.89		11.25	10.47		10.82	10.82		10.33	11.59
	Std Dev	1.07	1.06		0.71	0.56		1.08	1.08		1.14	1.02
	Min	8.39	8.39		10.49	9.83		8.39	8.39		8.72	10.43
	Max	13.51	14.02		12.59	11.48		13.03	13.03		13.51	14.02
Girls	N	75	75	59	17	17	14	41	41	29	17	17	16
	Mean	10.51	10.56	12.81	11.29	10.42	12.99	10.49	10.49	12.78	9.79	10.89	12.70
	Std Dev	1.05	0.92	1.14	0.77	0.6	1.03	1.02	1.02	1.22	0.84	0.91	1.13
	Min	8.08	8.08	9.80	9.88	9.37	11.38	8.08	8.08	10.31	8.54	9.49	9.80
	Max	13.11	13.03	14.93	13.11	11.47	14.54	12.88	12.88	14.66	11.07	13.03	14.93

“Testis 2” in boys, “breast 2” in girls, and “pubic hair 2” refer to age at the first Tanner genital, breast, and pubic hair stage 2, respectively.