. 2021 Sep 29;129(9):097011. doi: 10.1289/EHP9424

Table 2.

Child characteristics at follow-up, overall and by sex ( $mean \pm SD$ ) ( $n = 206$ ): The Health Outcomes and Measures of the Environment (HOME) Study.

Variable	Overall ( $n = 206$ )	Males ( $n = 93$ )	Females ( $n = 113$ )
Age (y)	12.3 (0.7)	12.4 (0.7)	12.3 (0.7)
Tanner stage [n (%)]
1	22 (11)	16 (17)	6 (5)
2	54 (26)	30 (32)	24 (21)
3	58 (28)	23 (25)	35 (31)
4	42 (20)	15 (16)	27 (24)
5	29 (14)	9 (10)	20 (18)
Missing	1	0	1
Whole-body lean mass (kg)	32.8 (8.3)	32.3 (8.6)	33.2 (8.0)
LBMI $z$ -score^a	$- 0.30$ (1.22)	$- 0.46$ (1.19)	$- 0.17$ (1.24)
BMC (g)
Whole-body less head	1,215.5 (321.7)	1,158.5 (318.4)	1,262.4 (318.2)
Total hip	25.0 (6.7)	25.4 (7.5)	24.7 (5.9)
Femoral neck	3.7 (0.8)	3.4 (0.8)	3.7 (0.8)
Forearm	1.4 (0.3)	1.4 (0.3)	1.5 (0.3)
Spine	38.5 (11.6)	35.0 (10.3)	41.4 (12.0)
BMC $z$ -score
Whole-body less head^b	$- 0.05$ (0.82)	$- 0.19$ (0.78)	0.06 (0.84)
Total hip^b	$- 0.07$ (0.92)	$- 0.12$ (0.95)	$- 0.04$ (0.89)
Femoral neck^b	0.23 (0.97)	0.12 (0.95)	0.32 (0.99)
Forearm^b	0.10 (0.97)	$- 0.05$ (0.93)	0.22 (0.98)
Spine^b	0.10 (0.85)	0.02 (0.85)	0.16 (0.85)
BMD
Whole-body less head aBMD ( ${g / cm}^{2}$ )	0.82 (0.09)	0.80 (0.09)	0.84 (0.09)
Total hip aBMD ( ${g / cm}^{2}$ )	0.85 (0.14)	0.83 (0.13)	0.86 (0.14)
Femoral neck aBMD ( ${g / cm}^{2}$ )	0.79 (0.14)	0.78 (0.12)	0.81 (0.15)
Forearm aBMD ( ${g / cm}^{2}$ )	0.60 (0.06)	0.59 (0.06)	0.61 (0.06)
Ultradistal forearm aBMD ( ${g / cm}^{2}$ )	0.35 (0.06)	0.34 (0.05)	0.35 (0.06)
Spine BMAD ( ${g / cm}^{3}$ )	0.23 (0.04)	0.21 (0.03)	0.24 (0.04)
BMD $z$ -score
Whole-body less head aBMD^b	$- 0.39$ (0.90)	$- 0.47$ (0.87)	$- 0.32$ (0.93)
Total hip aBMD^b	$- 0.02$ (1.07)	$- 0.09$ (1.09)	0.03 (1.06)
Femoral neck aBMD^b	$- 0.04$ (1.07)	$- 0.14$ (1.01)	0.04 (1.04)
Forearm aBMD^b	0.24 (0.93)	0.20 (0.88)	0.27 (0.98)
Ultradistal forearm aBMD^b	0.26 (1.15)	0.12 (0.98)	0.38 (1.26)
Spine BMAD^c	0.31 (1.02)	0.27 (1.00)	0.35 (1.04)

Note: aBMD, areal bone mineral density; BMC, bone mineral content; BMD, bone mineral density; BMAD, bone mineral apparent density; BMI, body mass index; LBMI, lean body mass index; SD, standard deviation.

^{^a}

Age- and sex-specific whole-body LBMI $z$ -score.

^{^b}

Height-for-age adjusted age-, sex-, and population ancestry-specific $z$ -score.

^{^c}

Age-, sex-, and population ancestry-specific $z$ -score.