Table 2. Associations of Brown Fat with Clinical and Biochemical Characteristics.

All Subjects (n = 24)	Log Brown Fat Volume		Log Brown Fat Volume normalized for LBM		Log SUV Mean
	r	p	r	p	R	p
Age (years)	-0.04	0.86	-0.11	0.60	-0.01	0.95
BMI (kg/m2)	0.05	0.81	0.13	0.54	0.11	0.63
Duration of Amenorrhea (months)	-0.31	0.14*	-0.34	0.09	-0.46	0.02*
Activity (hours/week)	-0.37	0.10	-0.27	0.23	-0.18	0.44
Pulse (bpm)	0.42	0.04	0.39	0.07	0.14	0.50
Temperature (°F)	0.47	0.02	0.34	0.13	0.38	0.07
Percentage of Body Fat	0.41	0.045	0.38	0.06	0.31	0.14
Total Fat Mass (kg)	0.25	0.24	0.27	0.20	0.19	0.36
Total Lean Mass (kg)	-0.46	0.02	-0.10	0.60	-0.45	0.03
Resting Energy Expenditure (REE)	-0.19	0.43	0.01	0.90	-0.21	0.38
Irisin (mcg/ml)	0.42	0.045	0.39	0.07	0.30	0.17
TSH (microU/mL)	-0.15	0.50	0.02	0.90	-0.09	0.66
Total T3 (ng/ml)	0.62	0.002	0.58	0.003	0.65	0.001
Free T4 (ng/L)	0.62	0.002	0.43	0.04	0.51	0.01

*Spearman’s correlations was used for non parametric distributions

SUV mean: mean standardized uptake value.