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Table 2 Growth rates of the subjects over different time periods on medication

From: Weight loss on stimulant medication: how does it affect body composition and bone metabolism? – A prospective longitudinal study

Time period (months: mean ± SD) Pre-treatment 0-6 months 6-12 months 12-24 months 24-36 months
(16.6 ± 9.4) (6.3 ± 1.5) (7.3 ± 2.0) (11.4 ± 2.1) (10.9 ± 2.5)
  n=11 n=30 n=30 n=28 n=24
Height velocity (cm/year) 6.5 ± 1.1 4.3 ± 1.9 4.5 ± 1.3 4.7 ± 1.2 5.3 ± 1.2
Weight velocity (kg/year) 2.7 ± 1.8 −1.5 ± 2.8 3.2 ± 3.1 2.9 ± 2.3 4.1 ± 2.3
Change in BMI/year 0.08 ± 0.86 −2.09 ± 1.89 0.81 ± 1.74 0.45 ± 1.05 0.83 ± 0.95
Δ Height Z-score/year −0.04 ± 0.17 −0.32 ± 0.38*** −0.22 ± 0.21*** −0.11 ± 0.19** −0.02 ± 0.17
Δ Weight Z-score/year −0.09 ± 0.36 −1.04 ± 0.74*** 0.03 ± 0.63 −0.13 ± 0.27* 0.06 ± 0.29
Δ BMI Z-score/year −0.08 ± 0.44 −1.29 ± 0.94*** 0.26 ± 0.96 −0.10 ± 0.39 0.12 ± 0.43
  1. *p<0.05; **p<0.01; ***p<0.001 for the change in Z-score over the time period using single sample t-tests against a test value of zero.
  2. Statistical analysis was applied to the changes in Z-scores only and used single sample t-tests with a test value of zero.
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