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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