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Table 2 Classification accuracy for each region-profile combination. Area under the ROC curve for principal component analysis of each profile by region of the femoral neck. Analysis using three-way ANOVA found that the area under the ROC curve was significantly higher in the perpendicular profile than in the parallel profile. (P < 0.05)

From: Identification of hip fracture patients from radiographs using Fourier analysis of the trabecular structure: a cross-sectional study

Region

Circular (95% CI)

Parallel (95% CI)

Perpendicular (95% CI)

Upper head

0.76 (0.63 – 0.89)

0.57 (0.41 – 0.73)

0.84 (0.73 – 0.95)

Central head

0.59 (0.43 – 0.75)

0.56 (0.40 – 0.73)

0.84 (0.72 – 0.95)

Upper neck

0.72 (0.58 – 0.86)

0.72 (0.57 – 0.86)

0.67 (0.52 – 0.82)

Wards triangle

0.74 (0.61 – 0.88)

0.61 (0.45 – 0.76)

0.71 (0.56 – 0.86)

Lower neck

0.71 (0.56 – 0.85)

0.55 (0.39 – 0.71)

0.93 (0.87 – 1.00)