Table 2.

Univariate analysis of risk factors associated with positive and negative cystic fluid cytology groups

	R2	β	t	95% CI	p value
Age (> 55 years)	0.117	0.342	3.0	0.114–0.569	0.004*
Gender (male)	0.01	− 0.102	− 0.842	− 0.351–0.143	0.403
Tumor size (> 4 cm)	0.002	− 0.04	− 0.33	− 0.059–0.042	0.742
Bosniak grade	0.157	0.397	3.563	0.15–0.533	0.001*

CI, confidence interval; β = standard coefficient

*p < 0.05