Table 3.

Logistic regression analysis estimating the relationship between repeated microsurgical resection of an intracranial tumor and morbidity at discharge

	Univariable analysis			Multivariable analysis
	OR	95% CI	p-value	aOR	95% CI	p-value
Repeated surgery	0.94	0.68–1.28	0.676	1.07	0.77–1.47	0.692
Age (per year)	1.01	1.00–1.02	0.029	1.01	1.00–1.02	0.006
Male sex	1.21	0.95–1.55	0.124	1.19	0.93–1.53	0.171
Tumor size (per increase in category)	1.38	1.11–1.71	0.004	1.43	1.14–1.79	0.002
Histology	1.02	0.98–1.05	0.360	1.02	0.98–1.06	0.305
Posterior fossa location	1.58	1.20–2.09	0.001	1.76	1.31–2.35	< 0.001

The multivariable analysis is adjusted for baseline differences in age, sex, histological diagnosis, size and posterior fossa location of the tumor