Table 1.

Baseline characteristics of subjects from the low and high BMD group.

	Low BMD group (s.d.)	High BMD group (s.d.)	p-value
N	54	64
Age	31.8 (4.80)	31.5 (4.97)	0.76
Total Hip BMD Z-score (standardized)	0.77 (0.06)	1.11 (0.08)	2.2 × 10-16
Body mass index (kg/m2)	21.72 (2.66)	30.03 (8.80)	3.88 × 10-10
Smoke (% yes)	0.33	0.39	0.65
Alcohol drinking (% yes)	0.91	0.85	0.45

s.d., standard deviation.