Table 2

Median, interquartile intervals and statistical significance (Breslow test) of variables that influenced the speed of negativisation, using Kaplan-Meier curves

PresentAbsentBreslow test (p value)
Dry cough28 (22–36)23 (17–28)0.01
Dyspnoea28 (21–39)24 (19–33)0.02
Throat pain29 (21–40)24 (19–33)0.016
IgG25 (20–34)18 (15–26)0.01
  • Time is expressed in days from disease onset.