Proposal of a modified tip apex distance for prediction of lag screw cut-out in trochanteric hip fractures

Open Access

Table 3

Reliability of different parameters in predicting lag screw cut-out.

	Area under the curve	P-value	95% confidence interval
	Area under the curve	P-value	Lower Bound	Upper Bound	Cut-off	Sensitivity %	Specificity %
TAD (mm)	0.923	<0.001	0.825	0.911	25	89.3	88.5
CalTAD (mm)	0.938	<0.001	0.943	1.003	25	90.4	73
Parker’s ratio AP (%)	0.830	0.001	0.636	1.024	64.5	75	98.9
Modified TAD (mm)	0.934	<0.001	0.855	1.013	25	90.1	90.9

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