Table 3 Validity of the resting energy expenditure.

	REE (kcal/d)		T-test	Bias kcal/d		LLA kcal/d	ULA kcal/d	Bias (%)		r	p-value	R²	p-value (linear regression)	CCC	Prediction
	Mean	SD	p-value	Mean	SD	LLA kcal/d	ULA kcal/d	Mean	SD	r	(correlation)	R²	p-value (linear regression)	CCC	Accurate %	Under %	Over %
REE derivation group	1844	328													100
Equation (1)	1844	279	0.9345	0	172	− 337	337	0.8	9.0	0.84	< 0.0001	0.73	< 0.0001	0.84	73.4	10.9	15.7
Equation (2)	1844	167	0.9992	0	167	− 327	327	0.8	9.1	0.86	< 0.0001	0.74	< 0.0001	0.85	76.0	10.4	13.7
REE validation group	1760	357													100
Equation (1)	1811	256	0.0022*	51	199	− 441	339	4.7	12.5	0.84	< 0.0001	0.70	< 0.0001	0.78	61.2	8.8	29.9
Equation (2)	1799	266	0.0154**	39	193	− 417	339	3.9	12.1	0.85	< 0.0001	0.72	< 0.0001	0.81	66.2	8.8	25.0

REE measured resting metabolic rate by IC, SD standard deviation, Bias difference between the predicted value and the measured REE, LLA lower limit of agreement, ULA upper limit of agreement, bias% bias in %, CCC concordance correlation coefficient, Accurate % percentage of subjects in which the error of the predictive equation was within 10% of the measured value, Under % percentage of subjects underestimated by the predictive equation with an error > 10% of the measured value, Over % percentage of subjects overestimated by the predictive equation with an error > 10% of the measured value.
*Cohen's d = 0.26.
**Cohen's d = 0.20.

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