Table 2.

Univariate and multivariate analysis of clinical characteristics to identify risk factors in the recurrence of PMA in the training set.

	Univariate analysis		Multivariate analysis
	OR (95%CI)	p	OR (95%CI)	p
Age, y	0.967 (0.937–0.997)	0.034*	0.963 (0.930–0.997)	0.035*
Sex
Male (ref.)	1
Female	1.008 (0.484–2.100)	0.982
Endocrine level
Non-functioning (ref.)	1
Functioning	1.196 (0.564–2.535)	0.641
Height, mm	1.068 (1.018–1.120)	0.007*	1.045 (0.992–1.100)	0.097
Residual tumor
Without (ref.)	1
With	2.963 (1.319–6.659)	0.009*	2.393 (1.011–5.667)	0.047*
Invasion
No (ref.)	1
Yes	3.359 (1.359–8.305)	0.009*	2.746 (0.994–7.585)	0.051
Surgical methods
Transcranial (ref.)	1
Trans-sphenoidal	0.904 (0.371–2.202)	0.824
Endoscopic	0.595 (0.206–1.722)	0.338
The IHC subtypes
Immunonegative (ref.)	1
Monohormonal	0.821 (0.358–1.881)	0.640
Plurihormonal	2.450 (0.865–6.939)	0.092

CI, confidence interval; IHC, immunohistochemistry; OR, odds ratio.

^*p < 0.05.