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Table 2 Demographic, comorbid conditions and first laboratory tests in ED 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
n 115 66 49  
age (years) 76.17 [58 - 84] 72.76 [55- 81] 78.09 [72 - 84] 0.022#
sex     0.275°
F 45 (39.1) 23 (34.8) 22 (44.9)  
M 70 (60.9) 43 (65.2) 27 (55.1)  
Hypertension     0.997°
No 54 (47.0) 31 (47.0) 23 (46.9)  
Yes 61 (53.0) 35 (53.0) 26 (53.1)  
Cardiopathy     0.342°
No 79 (68.7) 43 (65.2) 36 (73.5)  
Yes 36 (31.3) 23 (34.8) 13 (26.5)  
COPD     0.001°
No 93 (80.9) 60 (90.9) 33 (67.3)  
Yes 22 (19.1) 6 (9.1) 16 (32.7)  
Lung fibrosis     0.162§
No 110 (95.7) 65 (98.5) 45 (91.8)  
Yes 5 (4.3) 1 (1.5) 4 (8.2)  
Lung Cancer     1.000§
No 108 (93.9) 62 (93.9) 46 (93.9)  
Yes 7 (6.1) 4 (6.1) 3 (6.1)  
Cancer     0.795°
No 95 (82.6) 54 (81.8) 41 (83.7)  
Yes 20 (17.4) 12 (18.2) 8 (16.3)  
Immunodepression     0.210°
No 95 (82.6) 52 (78.8) 43 (87.8)  
Yes 20 (17.4) 14 (21.2) 6 (12.2)  
Neurological disorders     0.192°
No 78 (67.8) 48 (72.7) 30 (61.2)  
Yes 37 (32.2) 18 (27.3) 19 (38.8)  
Diabetes or other metabolic conditions     0.627°
No 71 (61.7) 42 (63.6) 29 (59.2)  
Yes 44 (38.3) 24 (36.4) 20 (40.8)  
Renal Failure     0.144°
No 100 (87.0) 60 (90.9) 40 (81.6)  
Yes 15 (13.0) 6 (9.1) 9 (18.4)  
Total WBC count /μl 9.24 [6.02 - 13.38] 7.62 [5.12 - 11.50] 10.90 [7.48 - 15.20] 0.005#
Lymphocyte count/ μl 1175.00 [792.50 - 1765.00] 1120.00 [820.00 - 1710.00] 1410.00 [740.00 - 1870.00] 0.567#
LDH U/L 285.50 [228.00 - 393.00] 288.50 [243.75 - 380.75] 272.00 [217.25 - 427.50] 0.351#
PCR mg/dL 4.46 [1.02 - 13.16] 5.64 [2.15 - 13.23] 3.48 [0.49 - 12.60] 0.257#
PCT ng/mL 0.07 [0.03 - 0.55] 0.05 [0.04 - 0.26] 0.16 [0.03 - 1.05] 0.151#
PaO2/FiO2 at arrival 318 [242 - 357] 331 [252 - 385] 322 [247 - 373] 0.350#
  1. Comparisons are made with: #Wilcoxon Rank Sum Test; °Chi-Square test; §Fisher’s Exact test