Table 4.

Prediction equations (PE) for total adipose tissue mass (TATM) and total adipose tissue fat mass (TATFM) derived and validated in the present study (P), and validations of existing equations published by Lean et al.⁽⁴⁾, Deurenberg et al.⁽²⁾ and Kvist et al.⁽⁶⁾ in women^*

	Reference of PE	Reference method	Subjects	Prediction equation	R2 (%) derivation	R2 (%) validation	SEE (kg)	CV (%)
TATM	Present (P1TATM)	MRI	d (P): 222	0·0726 age + 0·634 BW − 0·320 height + 0·206 hip + 10·9	0·89	0·84	d (P): 4·2	16
			v(P): 110				v (P): 3·0	12
	Present (P2TATM)	MRI	d (P): 222	0·789 BW + 0·0786 age − 0·342 height + 24·5	0·88	0·84	d (P): 4·2	16
			v(P): 110				v (P): 3·0	13
	Kvist et al.(6)	CT scan	d (K): 10†	(1·61 BW/height − 38·3) x 0·92	0·96	K: NR	d(K): 6·8%	NR
			v (K): 9†			P: 0·82	v(K): 8·5%	NR
			v(P): 110				v (P): 3·2	12
TATFM	Present (P1 total body fat)	MRI	d (P): 222	0·0581 age + 0·507 BW − 0·256 height + 0·165 hip + 8·68	0·89	0·84	d (P): 3·4	16
			v(P): 110				v (P): 2·4	12
	Present (P2 total body fat)	MRI	d (P): 222	0·631 BW + 0·0629 age − 0·273 height + 19·6	0·88	0·84	d (P): 3·4	16
			v(P): 110				v (P): 2·5	13
	Lean et al.(4)	UWW	d (L): 84	(0·439 waist + 0·221 age − 9·4) x BW/100	0·70	L: 0·75	d (L): 4·7	NR
			v (L): 238			P: 0·76	v (L): NR	NR
			v(P): 110				v (P): 3·0	12
	Deurenberg et al.{2)	UWW	d(D): 216	(1·20 BMI + 0·23 age −10·8×0 − 5·4)	0·80	D:0·80	d (D): 4·2	17
			v (D): 245			P:0·78	v (D): 4·0	16
			v(P): 110				v (P): 2·9	12

BW, body weight; CT, whole-body computed tomographic scan; d, derivation analysis; D, Deurenberg et al.; L, Lean et al.; K, Kvist et al; NR, not reported; UWW, underwater weighing; v, validation analysis.

^*TATFM, TATM and BW in kg; waist, hip, height in cm; BMI (kg/m²); age in years, and height measurement in m.

^†Nine women with ulcerative colitis were pooled with ten healthy women, nineteen women were ranked according to weight then allocated to derivation and cross-validation group.