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. Author manuscript; available in PMC: 2019 Mar 6.

Published in final edited form as: J Adolesc Health. 2017 Jan 11;60(4):455–459. doi: 10.1016/j.jadohealth.2016.11.005

Table 2.

Linear regression analysis of covariates associated with increased body composition Z-scores, adjusted models

	β (95% CI)	p value	R²
Fat mass Z-score
Female (vs. male)	−.65 (−1.39 to .09)	.09	.16
Age	−.05 (−.19 to .09)	.47
%mBMI	.08 (.04 to .12)	<.0001
Duration of illness^a	−.09 (−.42 to .24)	.61
Lean body mass Z-score
Female (vs. male)	.21 (−.08 to .50)	.16	.28
Age	−.01 (−.07 to .05)	.75
%mBMI	.03 (.01 to .05)	.0001
Duration of illness^a	−.07 (−.20 to .06)	.26
Whole body BMC Z-score	.21 (.09 to .33)	.0006

BMC = bone mineral content; CI = confidence interval; %mBMI = percentage median body mass index.

^a

Duration has been log transformed due to the skewness of the original data.