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. 2023 Apr 15;4(6):e452–e460. doi: 10.1016/S2666-5247(23)00042-3

Table 3.

Two-by-two contingency table of Xpert Xpress results for SARS-CoV-2

Positive on nasopharyngeal swab Negative on nasopharyngeal swab
All available results (n=586)
Positive on sputum 134 13
Negative on sputum 67 372
Complete cases only (n=584)
Positive on sputum 134 13
Negative on sputum 66 371

Xpert Xpress results on sputum for SARS-CoV-2 detection (index test) compared with Xpert Xpress results on nasopharyngeal swabs (reference test) for all participants with available data (n=586), and for participants without any missing test results (n=584).