Table 2

The outcome of COVID-19 PCR testing in 1605 mechanically ventilated patients with COVID-19 undergoing tracheostomy

COVID-19 PCR test in patients undergoing tracheostomy
Test positive during admission to hospital n (%)
 Positive1473 (92)
 Negative126 (8)
Total number of tests during admission to hospital
 Median (IQR)1 (1,2)
Outcome of last test before tracheostomy n (%)
 Positive1213 (83)
 Negative242 (17)
Outcome of second to last test before tracheostomy n (%)
 Positive678 (75)
 Negative228 (25)
Number of cases with two negative tests before tracheostomy n (%)115 (7)
Number of days from last test to tracheostomy
 Median (IQR)12 (6,18)