Smithgall 2020 [B].

Study characteristics
Patient Sampling	See Smithgall 2020 [A] for full study details and QUADAS‐2 entries
Patient characteristics and setting	See Smithgall 2020 [A] for full study details and QUADAS‐2 entries
Index tests	Test name: [B] Xpert Xpress (product codes not reported) (see Smithgall 2020 [A] for details of comparator test) Manufacturer: [B] Cepheid Antigen target: [B] N2, E genes Antibody: N/A Test method: [B] automated RT‐PCR Samples used: residual NP swabs (collection not described) Transport media: 3 mL VTM (M4RT VTM; ThermoFisher Scientific, Waltham, MA) or UTM (UTM; Becton Dickinson and Co., Franklin Lakes, NJ) Sample storage: stored at 4 °C; testing completed within 48 h of sample collection. Test operator: not stated; presume laboratory staff Definition of test positivity: automated as per manufacturer Blinding reported: not stated Timing of samples: not stated; presume on admission or presentation at ED
Target condition and reference standard(s)	See Smithgall 2020 [A] for full study details and QUADAS‐2 entries
Flow and timing	See Smithgall 2020 [A] for full study details and QUADAS‐2 entries
Comparative
Notes	See Smithgall 2020 [A] for full study details and QUADAS‐2 entries