Table 4.

Multivariate linear regression analysis for determining metabolic activity

Model	Variable	Coefficient	95 % CI	P	Adjusted R2
1	Nuclear Grade	1.119	0.632–1.606	< 0.001	0.238
	Ki-67	0.024	0.007–0.041	0.005
	Size	0.469	0.270–0.668	< 0.001
2	Ki-67	0.034	0.016–0.052	< 0.001	0.126
	p53	0.015	0.003–0.028	0.018
	EGFR	1.823	0.328–3.319	0.017
	p53*EGFR	-0.026	− (0.049 − 0.003)	0.028