Table 2.

Comparison of radiological parameters between stable and unstable group

	Stable Group (n=78)		Unstable group (n=131)		p value
	Mean±SD	Min–Max	Mean±SD	Min-Max
Age, years	81.06±10	65–99	81.95±7.8	65–104	0.482
Gender, female/male	60/18		90/41		0.131
Treatment modality, intertan/PFNA	62/16		82/49		0.003
Fracture side
Cortical thickness index	0.477±0.11	0.27–0.97	0.469±0.08	0.26–0.69	0.606
Canal-to-calcar ratio	0.634±0.17	0.36–1.33	0.638±0.15	0.34–1.06	0.814
Dorr type, A/B/C	15/44/19	21/81/29			0.728
Unaffected side
Cortical thickness index	0.517±0.09	0.31–0.81	0.508±0.09	0.27–0.73	0.672
Canal-to-calcar ratio	0.581±0.13	0.28–0.95	0.559±0.11	0.31–0.89	0.270
Dorr type, A/B/C	21/47/10		44/76/11		0.429
Tip apex distance, AP					0.787
Tip apex distance, lateral					0.276
Screw/blade prominence	11		18		0.548
Excessive collapse	7		23		0.087
Failure ratio	2		14		0.026*
Revision surgery	1		4		0.383

SD: Standard deviation; Min: Minimum; Max: Maximum; AP: Anteroposterior; PFNA: Proximal femoral nail anti-rotation.