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Table 7 Chi-square statistics of calculated sums of positive criteria – BN vs. cancer

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

BN vs. cancer BN Cancer Χ2 p-value
≥1 criterion 120/142 (85%) 49/53 (93%) 2.10869 0.14646
≥2 criteria 78/142 (55%) 45/53 (85%) 14.89056 0.00011
≥3 criteria 36/142 (25%) 31/53 (59%) 18.79224 0.00001
≥4 criteria 10/142 (7%) 19/53 (36%) 25.29781 0.0000005
5 criteria 2/142 (1%) 4/53 (8%) 4.87687 0.02722