Table 3. Factors associated with resolution of patient-reported diplopia.

	Univariate Analysis			Multivariate Analysis*
	HR	95% CI	P value	HR	95% CI	P value
Time interval from trauma to first visit, per 1day later	0.850	0.685–1.055	0.141	0.733	0.584–0.921	0.008
Time interval from trauma to surgery, per 1day later	0.992	0.934–1.054	0.798
Time interval from first visit to surgery, per 1day later	1.022	0.957–1.092	0.509
Abduction limitation, per each grade	0.666	0.394–1.126	0.129
Adduction limitation, per each grade	1.254	0.584–2.694	0.561
Supraduction limitation, per each grade	1.590	1.217–2.078	0.001	1.743	1.193–2.546	0.004
Infraduction limitation, per each grade	1.030	0.760–1.396	0.847
Trapdoor fracture†	5.308	1.266–22.252	0.003
Muscle incarceration‡	1.969	0.970–3.997	0.061
Fat or muscle sheath incarceration‡	0.775	0.401–1.499	0.449
Retrobulbar hemorrhage	1.117	0.601–3.484	0.405
Combined floor and medial wall fracture	1.277	0.607–2.683	0.519
Height of medial wall fracture, per 1mm larger	0.973	0.913–1.037	0.400
Longitudinal length of medial wall fracture, per 1mm larger	0.970	0.922–1.022	0.255
Horizontal length of floor fracture, per 1mm larger	1.056	1.004–1.110	0.035	1.216	1.074–1.376	0.002
Longitudinal length of floor fracture, per 1mm larger	1.032	0.991–1.076	0.130

CI = confidence interval; HR = Hazard ratio. Factors with statistical significance are shown in boldface.

* Variables with P < 0.15 in the univariate analysis were included in the multivariate model.

^†Trapdoor fracture defined as the linear non-displaced fracture with the lack of displacement of the involved bones.

^‡Fractures with tissue incarceration were divided according to CT findings whether the incarcerated tissue included the muscle belly or only the muscle sheath and/or fat tissue.