Table 4.

Binary logistic regression model for intraoperative fractures using SP-CL implant

Variable	OR	95% CI	p
CFI shape	0.13	0.03–0.55	0.006
Canal–calcar ratio	< 0.01	0.00–0.38	0.032
Surgical approach	0.14	0.71–12.04	0.138
Year of operation	0.63	0.32–1.23	0.174
Gender	0.54	0.14–2.12	0.379
Age	1.02	0.94–1.11	0.599
Implant size	1.35	0.30–6.05	0.696

CFI canal flare index

CFI shape was stovepipe, normal, or champagne flute configuration; surgical approach coded as 1 for direct lateral and 2 for posterolateral; Gender coded as 1 for male and 0 for female; implant sizes split at the median value and classified as 0 for smaller and 1 for larger size