Table 5. Univariate analyses for the postoperative treatment effect (Cox proportional hazards model).

Factor	Overalls		OR	95% CI		P
	n	%		Lower bond	Upper bond
Sex						0.927
Female	62	56.9	Ref.
Male	47	43.1	0.927	0.600	1.593
Age						0.003
<40	37	33.9	Ref.
≥40	72	66.1	3.033	1.444	6.371
Pathological diagnoses						0.004
Nonthymoma	72	66.1	Ref.
Thymoma	37	33.9	2.075	1.268	3.395
MGFA clinical classification						0.004
I	51	47.8	Ref.
IIA and above	58	52.2	2.230	1.294	3.843
Extent of resection						0.216
Total thymectomy	10	9.2	Ref.
Partial thymectomy	99	90.8	1.535	0.779	3.022
Surgical approach						0.070
Subxiphoid approach	58	53.2	Ref.
Right thoracic approach	51	46.8	0.637	0.391	1.038