Table 7. Results of receiver operating characteristic analysis between decrease of body weight or volume and inter- (≥3 mm) or intra-fractional (≥ 2 mm) variations.

				Asymptotic 95% CI
		AUC	Asymptotic significance	Lower bound	Upper bound
Δ(inter)—decrease of ΔBW	RL	0.558	0.228	0.468	0.649
	SI	0.513	0.670	0.449	0.578
	AP	0.442	0.042	0.381	0.503
	3D	0.469	0.252	0.417	0.520
	Any direction	0.491	0.737	0.439	0.544
Δ(inter)—decrease of ΔBV	RL	0.541	0.400	0.437	0.645
	SI	0.429	0.021	0.366	0.492
	AP	0.425	0.009	0.369	0.482
	3D	0.452	0.078	0.399	0.505
	Any direction	0.435	0.015	0.384	0.487
Δ(intra)—decrease of ΔBW	RL	0.668	0.069	0.490	0.846
	SI	0.459	0.886	0.358	0.559
	AP	0.694	0.007	0.557	0.831
	3D	0.646	0.001	0.559	0.733
	Any direction	0.659	0.006	0.548	0.771
Δ(intra)—decrease of ΔBV	RL	0.663	0.077	0.517	0.810
	SI	0.970	0.104	0.955	0.986
	AP	0.707	0.004	0.579	0.835
	3D	0.639	0.002	0.547	0.731
	Any direction	0.694	0.001	0.592	0.796

Abbreviations: AUC, area under receiver operating characteristic curve; CI, confidence interval; RL, right-left; SI, superior-inferior; AP, anterior-posterior; 3D, three dimensional; Δ(inter), inter-fractional variation; Δ(intra), intra-fractional variation; ΔBW, variation of body weight; ΔBW, variation of body volume