Table 3.

Intraclass correlation coefficient (ICC) scores for the three readers

Question	ICC	95% CI	ICC rating^a
Findings
Is there a whirlpool sign?	0.88	0.79–0.93	Excellent
Is the SMA/SMV normal?	0.84	0.73–0.91	Excellent
Is the proximal duodenum dilated?	0.83	0.72–0.90	Excellent
Is there a normal retroperitoneal third portion of the duodenum?	0.73	0.57–0.84	Good
Impression
Is there midgut volvulus?	0.90^b	0.83–0.95	Excellent

CI confidence interval, SMA superior mesenteric artery, SMV superior mesenteric vein

^aThe Cicchetti guidelines for interpreting kappa or ICC inter-rater agreement measures were used and interpreted as follows: less than 0.40 = poor, 0.40–0.59 = fair, 0.60–0.74 = good, 0.75–1.00 = excellent [20]

^bAgreement and overall performance were best for the impression of midgut volvulus