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Table 4 Clinical course of RT-PCR negative patients. Data are described in the whole group and in the two subgroups COVID-19 and NOT-COVID defined at the end of the hospital stay by clinical judgment or further testing. Data are expressed as absolute frequencies and percentages (in brackets) for categorical variables and as medians and Interquartile Ranges [IQR]

From: The broad spectrum of COVID-like patients initially negative at RT-PCR testing: a cohort study

  Overall Median [IQR] N (%) COVID-19 Median [IQR] N (%) COVID-free/other than COVID Median [IQR] N (%) p
CPAP/NIV     0.961°
No 96 (83.5) 55 (83.3) 41 (83.7)  
Yes 19 (16.5) 11 (16.7) 8 (16.3)  
CPAP/NIV duration days 5.00 [2-8] 4.00 [2-7] 5.50 [3-8] 0.803#
ED outcome     1.000§
Discharged 7 (6.1) 4 (6.1) 3 (6.1)  
Admitted 108 (93.9) 62 (93.9) 46 (93.9)  
Hospital admission and outcome
Hospital ward     0.169§
  IOT/ICU transfer 4 (3.7) 2 (3.2) 2 (4.3)  
  HDU 22 (20.4) 9 (14.5) 13 (28.3)  
  Regular Ward 82 (75.9) 51 (82.3) 31 (67.4)  
Length of stay in HDU 7.50 [4 - 21] 7.50 [4 - 21] 7.50 [4 - 20] 0.702#
Hospital outcome     0.081°
  discharged 84 (77.8) 44 (71.0) 40 (87.0)  
dead 24 (22.2) 18 (29.0) 6 (13.0)  
  1. Comparisons are made with: #Wilcoxon Rank Sum Test; °Chi-Square test; §Fisher’s Exact test