Table 5. Correlations between body weight or body volume variations and absolute value of inter-fractional variations.

Absolute value		ΔRL(mm)	ΔSI(mm)	ΔAP(mm)	Δpitch(°)	Δroll(°)	Δyaw(°)	Δ3D(mm)
Body weight variations	rho	-0.012	-0.111	0.053	-0.072	-0.028	-0.069	-0.026
	p	0.792	0.015	0.248	0.111	0.546	0.131	0.569
	N	484	484	484	484	484	484	484
Body volume variations	rho	-0.006	0.067	0.073	0.089	-0.080	0.078	0.062
	p	0.879	0.088	0.066	0.024	0.041	0.048	0.116
	N	646	646	646	646	646	646	646

Abbreviations: ΔRL, variation of right-left; ΔSI, variation of superior-inferior; ΔAP, variation of anterior-posterior; Δpitch, variation of pitch; Δroll, variation of roll; Δyaw, variation of yaw; 3D, three dimensional