Table 6.

Impact of rectal artifacts with lesion location on subjective evaluation and DL

	PZ			TZ
	AUC		P value	AUC		P value
	no artifact	artifact	no artifact vs. artifact	no artifact	artifact	no artifact vs. artifact
R1	0.64(0.57–0.70)	0.60(0.51–0.68)	0.43	0.66(0.60–0.71)	0.59(0.52–0.65)	0.23
R2	0.66(0.58–0.72)	0.61(0.52–0.69)	0.5	0.73(0.67–0.77)	0.64(0.57–0.70)	0.08
R3	0.75(0.69–0.81)	0.72(0.64–0.79)	0.49	0.72(0.66–0.76)	0.70(0.64–0.76)	0.93
R4	0.77(0.69–0.83)	0.71(0.65–0.77)	0.32	0.75(0.69–0.79)	0.68(0.62–0.74)	0.25
R5	0.76(0.67–0.82)	0.73(0.66–0.78)	0.62	0.75(0.69–0.79)	0.72(0.66–0.76)	0.63
R6	0.84(0.78–0.88)	0.76(0.68–0.83)	0.09	0.76(0.70–0.80)	0.75(0.69–0.79)	0.98
DL	0.78(0.72–0.83)	0.62(0.53–0.70)	0.003	0.73(0.67–0.77)	0.60(0.53–0.66)	0.011

Data inside parentheses represent 95% confidence intervals. PZ peripheral zone, TZ transitional zone, AUC area under the receiver operating characteristic curve