Association between the sonographer’s experience and diagnostic performance of IOTA simple rules

Table 3 Detail results of the five sets diagnoses

Pathological diagnosis	Diagnosis 1		Diagnosis 2		Diagnosis 3		Diagnosis 4		Diagnosis 5
Pathological diagnosis	−	+	−	+	−	+	−	+	−	+
−	71	25	105	4	95	12	109	7	89	13
+	1	61	2	51	16	42	0	67	2	58
Inconclusive	28	13	15	22	17	17	8	8	22	15

Diagnosis 1 was made by a trainee according to the simple rules. Diagnoses 2 and 3 were made by an experienced and a less-experienced sonographer, respectively, according to their clinical experiences. Diagnoses 4 and 5 were made by the experienced and less-experienced sonographer, respectively, according to their experiences, with diagnosis 1 as a reference. “−” means “benign,” “+” means “malignant”

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