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Table 7 The assessment of sensitivity and specificity of the Adams test, according to the Youden index

From: The importance of the size of the trunk inclination angle in the early detection of scoliosis in children

Category Positive False positive False negative Negative Sensitivity Specificity Youden index
Distribution criterion ATI ≥ 7°
Overall 85 2 131 11 39.4% 84.6% 24.0%
6–9 20 1 39 4 33.9% 80.0% 13.9%
10–12 18 0 47 5 27.7% 100% 27.7%
13–17 47 1 45 2 51.1% 66.67% 17.8%
Distribution criterion ATI ≥ 5°
Overall 171 9 45 4 79.2% 30.77% 9.9%
6–9 40 4 19 1 67.8% 20% 12.2%
10–12 45 2 20 3 69.2% 60% 29.2%
13–17 86 3 6 0 93.5% 0% 6.5%