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Table 1 Baseline Characteristics on Hospital Admission

From: Clinical characteristics and outcomes of critically ill COVID-19 patients in Tokyo: a single-center observational study from the first wave

Variable   Range
Age, years 57.5 (49.0, 69.8) 30–85
Male 19 (79)  
BMI, kg/m2 24.7 (22.3, 28.2) 19.4–35.4
 Underweight (BMI < 18.5) 0 (0)  
 Normal (18.5 ≤ BMI < 25) 13 (54)  
 Overweight (25 ≤ BMI < 35) 7 (29)  
 Obese (35 ≤ BMI) 4 (17)  
Comorbidities
 Hypertension 8 (33)  
 Diabetes 7 (29)  
 Coronary artery disease 2 (8)  
 Asthma 6 (25)  
 Chronic obstructive pulmonary disease 3 (13)  
 Hyperuricemia 4 (17)  
 Malignancy 2 (8)  
 Others* 4 (17)  
Current or former smoker 16 (67)  
Habitual or occasional alcohol consumption 11 (58)  
Symptoms
 Fever 23 (96)  
 Dyspnea 17 (71)  
 Myalgia 4 (17)  
 Diarrhea 6 (25)  
Vital signs
 Body temperature†, degrees Celsius 37.7 (37.1, 38.2) 36.2–39.5
 Heart rate, beats per minute 98 (94, 115) 66–133
 Respiratory rate, per minute 24 (20, 30) 14–44
 SpO2‡, % 92 (88, 94) 66–97
Laboratory data
 White blood cell count, /mm3 7250 (4975, 8950) 3200–19,900
 Neutrophil to lymphocyte ratio 10.1 (5.1, 20.1) 2.5–62.0
 Platelet count, ×104 /μL 17.4 (15.6, 22.3) 120–389
 Lactic acid dehydrogenase, U/L 383 (315, 496) 214–1002
 Aspartate aminotransferase, U/L 49.0 (36.5, 68.5) 46.0–97.0
 Alanine aminotransferase, U/L 34.0 (27.5, 50.5) 16.0–85.0
 Creatinine kinase, U/L 152 (56, 357) 17–2663
 C-reactive protein, mg/dL 10.5 (7.4, 16.0) 0.9–33.8
 D-dimer, μg/mL 1.2 (1.0, 9.9) 0.5–25.7
  1. BMI body mass index, SpO2 percutaneous pulse saturation
  2. Missing data: Habitual or occasional alcohol consumption, 5; SpO2, 5
  3. Data are expressed as numbers (percentage) or median (interquartile range)
  4. *Rheumatoid arthritis, hyperthyroidism, ulcerative colitis, and a past history of pulmonary embolism were present in one patient each, respectively
  5. †Body temperature measurements were all axillary
  6. ‡Includes measurements with room air inhalation. Initial SpO2 measurements under the influence of oxygen inhalation were excluded
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