Table 2.

Cause-specific hazard ratio (HR) comparing CRT versus RT for each competing event based on the logrank test

Variables	O	E	Unadjusted HR (95% CI)	p-value
M: Distant metastasis
RT	38	26.54	0.43 (0.25 - 0.72)	0.002
CRT	18	29.46	1.00
R: Loco-regional recurrence
RT	10	9.19	0.84 (0.34 - 2.07)	0.711
CRT	9	9.81	1.00