Table 4.

Logistic regression of risk factors for mal-angulation of the ISS and TITS.

	ISS, axial	ISS, coronal	TITS, axial	TITS, coronal
BMI	0.79	0.40	0.19	0.29
AO	0.40	0.23	0.98	0.99
Sacral fracture	0.80	0.66	0.89	0.76
Open/closed reduction	0.34	0.51	0.80	0.15
Supine/prone position	0.15	0.46	0.84	0.94
Reduction quality	0.96	0.16	0.62	0.33
Sacral dysmorphism	N/A	N/A	0.41	0.46

ISS iliosacral screw, TITS trans-iliac trans-sacral screw, BMI body mass index, AO Arbeitsgemeinschaft für Osteosynthesefragen, N/A not available.