Table 3.

Results of correlation coefficients between P _Φ and P _Dc from all the error types

Coefficients	Gantry	MU	Jaw	Collimator	MLC
$P_{\mathrm{\Phi },I(\overrightarrow{r})}$ and $P_{Dc,I(\overrightarrow{r})}$ (2% intensity difference)
Pearson (r)	0.5631	0.5489	0.7025	0.8575	0.5297
Spearman (ρ)	0.9267	0.9183	0.9226	0.9515	0.6754
Spearman (p)	0.0427	0.0242	0.0475	0	0.0305
P Φ,γ and  P Dc,γ (2%, 2mm Gamma analysis)
Pearson (r)	0.6125	0.5987	0.7871	0.8824	0.5011
Spearman (ρ)	0.9334	0.9423	0.9498	0.9817	0.7042
Spearman (p)	0.0375	0.0197	0.0420	0	0.0421