Table 2.

Radiological signs of pulmonary embolism and right ventricular strain with associated interrater reliability for each sign

Variable	n (%)	Kappa by percent agreement	Kappa by Cohen
Occlusive embolism (vs. nonocclusive)	11 (11)	0.79	0.03
Peripheral embolism (vs. central and/or peripheral)	72 (71)	0.82	0.60
Unilateral embolism (vs. bilateral)	41 (40)	0.72	0.48
Pulmonary trunk size >3 cm (vs. smaller)	33 (32)	0.89	0.75
Paradoxical septal bowing	21 (21)	0.76	0.27
RV/LV ratio >1 (vs. less)	33 (32)	0.76	0.48
IVC contrast reflux	44 (43)	0.75	0.50
Hepatic vein contrast reflux	21 (21)	0.92	0.74

RV=Right ventricular, LV=Left ventricular, IVC=Inferior vena cava