Role of MSCT in the diagnosis of perforated gall bladder (a retrospective study)

Egyptian Journal of Radiology and Nuclear Medicine

Table 4 Chi-squared independence test (non-parametric test) for the measurement of expectation between CT and US imaging type I GBP

Test statistics
	CT imaging findings type IGBP	US imaging findings type IGBP
Chi-squared	6.133^a	1.692^b
df	12	5
Asymp. Sig.	0.909	0.890

^a 13 cells (100.0%) have expected frequencies less than 5. The minimum expected cell frequency is 3.5
^b 6 cells (100.0%) have expected frequencies less than 5. The minimum expected cell frequency is 4.3