Table 2.

Contingency Table for Diagnostic Accuracy of AARR and SIT in Detecting PA

Test Result	No PA	PA	Total
AARR
Positive	38	18	56
Negative	326	0	326
Total	364	18	382
SIT
Positive	8	18	26
Negative	155	0	155
Total	163	18	181

Values are numbers of patients. PA was diagnosed in patients with a positive AARR and a positive SIT result, whereas PA was excluded if results of only one or none of these two tests were positive.