Table 2.

Interobserver Agreement between Observers for Each Category of Various TIRADS Systems

TIRADS	ACR- TR	P-value	Siriraj-TR	P-value	EU-TR	P-value
TIRADS 1	0.852	< 0.05	0.652	< 0.05	N/A	N/A
TIRADS 2	0.525	< 0.05	0.14	0.073	0.274	< 0.05
TIRADS 3	0.375	< 0.05	-0.031	0.627	0.167	< 0.05
TIRADS 4	0.229	< 0.05	0.106	0.136	0.092	0.168
TIRADS 5	0.177	< 0.05	N/A	N/A	0.2	< 0.05