Daniel R. Feikin, Basem M. Alraddadi, Mohammed Qutub, Omaima Shabouni, Aaron Curns, Ikwo K. Oboho, Sara M. Tomczyk, Bernard J. Wolff, John T. Watson, and Tariq A. Madani
Figure 2. Box plot of Ct values for 102 patients infected with MERS-CoV by severity status. Kingdom of Saudi Arabia, 2014. A) Patients who were alive (n = 61) versus dead (n = 41) at the time of follow-up chart review or phone contact. Wilcoxon rank-sum test, p = 0.0087. B) Patients who had a severe outcome (death or ICU admission, n = 48) versus nonsevere outcome (n = 54). Wilcoxon rank-sum test, p = 0.0036. C) Patients who were admitted to the ICU (n = 36) versus the regular ward (n = 31). Wilcoxon rank-sum test, p = 0.014. D) Among patients who survived, symptomatic (n = 30) versus mildly symptomatic/asymptomatic (n = 31). Wilcoxon rank-sum test, p = 0.08. Box and whiskers plot features are as follows: central line in box is median, bottom line of box is first quartile (25%), top line of box is third quartile (75%), diamond is mean, bottom of whiskers is first quarter minus 1.5 × interquartile range, top of whiskers is third quarter plus 1.5 × interquartile range, and dots are outliers. Ct , cycle threshold; ICU, intensive care unit; MERS-CoV, Middle East respiratory syndrome coronavirus.