Table 5.

Correlation between measured size of stones using ultrasonography and computed tomography

	Diameter on US	Diameter on CT
Spearman’s rho
Diameter on US
Correlation coefficient	1.000	0.755**
Significant (one-tailed)	.	0.000
Number (n)	100	100
Diameter on CT
Correlation coefficient	0.755**	1.000
Significant (one-tailed)	0.000	.
Number (n)	100	100

**Spearman’s correlation coefficient revealed strong compatibility between US measurements and CT measurements (r=0.755), (P=0<0.001). US: Ultrasonography, CT: Computed tomography