Mean baseline BMD Z-scores (Table 1) suggests that
these adolescents had considerably higher bone density at
baseline than the age-specific reference population.
When viewed by age group, the baseline Z-scores were particularly
high in the younger participants (aged ≤14 years) (data not
shown). While baseline Z-scores were somewhat lower with
increasing chronological age, in all age groups they remained
well above zero, the age-adjusted mean BMD for the
reference population.