Table 2

Annual accretion in bone mineral content (BMC), bone area, and bone calcium according to sex and pubertal stage at the first examination

		Pubertal stage
		I	II	III	IV	V
Girls
Number	38	26	20	30	56
BMC (g/year)
10 centile	67	80	81	7	−46
50 centile	112	218	249	132	69
90 centile	188	303	343	310	199
Bone area (cm²/year)
10 centile	74	76	27	−6	−61
50 centile	112	180	197	78	33
90 centile	164	261	264	178	101
Calcium (mg/day)
10 centile	58.9	70.2	71.8	6.2	−40.5
50 centile	98.9	192.6	220.1	116.4	60.8
90 centile	165.8	267.0	302.2	273.6	175.1
Boys
Number	68	17	14	10	26
BMC (g/year)
10 centile	76	143	215	108	12
50 centile	122	212	359	284	110
90 centile	179	398	438	377	201
Bone area (cm²/year)
10 centile	77	131	151	30	1
50 centile	115	190	252	174	36
90 centile	158	297	300	256	95
Calcium (mg/day)
10 centile	67.0	125.9	189.9	95.1	10.8
50 centile	107.6	187.1	316.7	250.8	96.8
90 centile	157.8	350.9	386.1	332.7	177.6