Using Reduced Inoculum Densities of Mycobacterium tuberculosis in MGIT Pyrazinamide Susceptibility Testing to Prevent False-Resistant Results and Improve Accuracy: A Multicenter Evaluation

Table 5

Accuracy of MGIT PZA susceptibility test results stratified by inoculation method.

Accuracy	Percentage (number) by inoculation method
	BD	A	C
Accurate	78.3 (238)	90.5 (268)	94.1 (272)
Inaccurate	21.7 (66)	9.5 (28)	5.9 (17)
Total	304	296	289

Actual and predicted categorical results were the same. Actual and predicted categorical results were different. Denominators used to calculate accuracy percentages.