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Table 3 Chi-square statistics: Number (%) of positive criteria - BN versus PTC

From: Ultrasound criteria for risk stratification of thyroid nodules in the previously iodine deficient area of Austria - a single centre, retrospective analysis

BN vs.PTC:

BN

PTC

Χ2

p-value

Mild hypoechogenicity

55/142 (39%)

17/45 (38%)

0.013

0.909

Marked hypoechogenicity

26/142 (18%)

20/45 (44%)

12.583

0.0004

Microlobulated/ irregular margins

39/142 (27%)

27/45 (60%)

15.839

0.00007

Microcalcifications

10/142 (7%)

15/45 (33%)

20.394

0.00001

Taller than wide

17/142 (12%)

15/45 (33%)

10.993

0.001

No thin halo

99/142 (70%)

40/45 (89%)

6.582

0.010