Table 4.

Bone density and bone turnover markers in adolescent boys with AN and healthy adolescent boys

	Controls (n = 17)	AN (n = 17)	P
Lumbar spine BMD Z-score	−0.14 ± 0.81	−1.09 ± 0.98	0.004
Lumbar BMD Z-score less than −1	23.5%	50.0%	NS
Lumbar spine BMAD Z-score	−0.07 ± 0.16	−0.32 ± 0.33	0.008
Lumbar spine BMAD Z-score less than −1	0%	5.9%	NS
Total hip BMD Z-score	−0.06 ± 0.81	−1.23 ± 0.99	0.0008
Total hip BMD Z-score less than −1	23.5%	58.8%	0.04
Femoral neck BMD Z-score	−0.23 ± 0.94	−1.17 ± 0.82	0.004
Femoral neck BMD Z-score less than −1	17.7%	64.7%	0.007
Trochanteric BMD Z-score	−0.08 ± 0.64	−1.22 ± 0.80	<0.0001
Trochanteric BMD Z-score less than −1	5.9%	70.6%	0.0001
Intertrochanteric BMD Z-score	0.07 ± 0.88	−1.14 ± 1.18	0.002
Intertrochanteric BMD Z-score less than −1	17.7%	58.8%	0.02
Whole-body BMD Z-score	−0.27 ± 0.76	−1.09 ± 1.14	0.02
Whole-body BMD Z-score less than −1	23.5%	43.8%	NS
WB BMC/height Z-score	0.13 ± 0.75	−0.80 ± 0.77	0.001
WB BMC/height Z-score less than −1	0%	29.4%	0.02
PINP (ng/ml)	259.3 ± 112.8	166.3 ± 99.7	0.04
NTX/cr (nmol BCE)	320.8 ± 205.5	166.6 ± 134.7	0.04

Mean ± sd. cr, Creatinine; BCE, bone collagen equivalent; NS, not significant.