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. 2020 Jul 8;9:85. doi: 10.1186/s40249-020-00710-6

Table 1.

Demographic, epidemiologic and clinical characteristics of different subtypes in patients with COVID-19

Characteristic Mild type (n = 52) Common type (n = 658) Severe type (n = 61) Critical type (n = 17) Pvalue
Age (years) 37.5 (19.3–45.8) 45.0 (35.0–55.0) 55.0 (44.0–62.0) 70.0 (55.0–73.0) < 0.001
Distribution < 0.001
 ≤ 18 12 (23.1) 9 (1.4) 0 (0.0) 0 (0.0)
 19–40 16 (30.8) 241 (36.6) 11 (18.0) 0 (0.0)
 41–65 24 (46.2) 350 (53.2) 39 (63.9) 7 (41.2)
 ≥ 66 0 (0.0) 58 (8.8) 11 (18.0) 10 (58.8)
Sex (male) 26 (50.0) 329 (50.0) 39 (63.9) 13 (76.5) 0.034
BMI (kg/m2) < 0.001
 <  18.5 5/25 (20.0) 20/370 (5.4) 0/36 (0.0) 0/13 (0.0)
 18.5–<  25 17/25 (68.0) 240/370 (64.9) 17/36 (47.2) 7/13 (53.8)
 ≥ 25 3/25 (12.0) 110/370 (29.7) 19/36 (52.8) 6/13 (46.2)
Current smoker 2 (3.8) 45 (6.8) 5 (8.2) 2 (11.8) 0.544
Exposure history in Wuhan 23 (44.2) 331 (50.3) 31 (50.8) 8 (47.1) 0.853
Incubation period (days) 7.0 (3.0–11.5) (n = 17) 6.0 (3.0–9.0) (n = 156) 3.0 (2.0–5.5) (n = 14) 7.0 (n = 1) 0.239
Family cluster 25 (48.1) 152 (23.1) 11 (18.0) 7 (41.2) < 0.001
Time from illness onset to first hospital admission (days) 2.5 (1.0–4.0) 3.0 (1.0–6.0) 5.0 (2.0–8.0) 5.0 (2.5–6.5) < 0.001
Coexisting disorder
 Any 10 (19.2) 161 (24.5) 31 (50.8) 16 (94.1) < 0.001
 Hypertension 5 (9.6) 87 (13.2) 19 (31.1) 15 (88.2) < 0.001
 Heart disease 0 (0.0) 9 (1.4) 1 (1.6) 1 (5.9) 0.254
 Diabetes 3 (5.8) 42 (6.4) 8 (13.1) 4 (23.5) 0.019
 Chronic obstructive pulmonary disease 0 (0.0) 0 (0.0) 2 (3.3) 1 (5.9) 0.001
 Cancer 0 (0.0) 3 (0.5) 3 (4.9) 0 (0.0) 0.030
 Chronic liver disease 1 (1.9) 26 (4.0) 2 (3.3) 2 (11.8) 0.351
 Chronic renal disease 0 (0.0) 5 (0.8) 1 (1.6) 1 (5.9) 0.150
Symptoms on admission
 Fever 28 (53.8) 534 (81.2) 57 (93.4) 17 (100.0) < 0.001
 Cough 19 (36.5) 426 (64.7) 49 (80.3) 12 (70.6) < 0.001
 Sputum production 8 (15.4) 219 (33.3) 29 (47.5) 9 (52.9) 0.001
 Hemoptysis 0 (0.0) 8 (1.2) 6 (9.8) 1 (5.9) 0.001
 Sore throat 8 (15.4) 95 (14.4) 7 (11.5) 1 (5.9) 0.796
 Nasal obstruction 6 (11.5) 41 (6.2) 0 (0.0) 0 (0.0) 0.034
 Myalgia 4 (7.7) 68 (10.3) 14 (23.0) 5 (29.4) 0.004
 Fatigue 10 (19.2) 105 (16.0) 18 (29.5) 6 (35.3) 0.013
Gastrointestinal symptom 7 (13.5) 63 (9.6) 12 (19.7) 6 (35.3) 0.002
Headache 2 (3.8) 61 (9.3) 11 (18.0) 1 (5.9) 0.076

Data are presented as medians (interquartile ranges, IQR), n (%) and n/N (%)