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Table 1 Demographic, epidermiological characteristics, and underlying comorbidities of patients with confirmed 2019-nCoV infection

From: Host susceptibility to severe COVID-19 and establishment of a host risk score: findings of 487 cases outside Wuhan

VariablesTotal (N = 487)Mild (N = 438)Severe (N = 49)P value
Age (years)46 (19)45 (19)56 (17)< 0.001
Sex
 Male259 (53.2%)223 (50.9%)36 (73.5%) 
 Female228 (46.8%)215 (49.1%)13 (26.5%)0.003
Occupation
 Agricultural worker140 (28.7%)122 (27.9%)18 (36.7%) 
 Self-employed219 (45.0%)203 (46.3%)16 (32.7%) 
 Employee82 (16.8%)79 (18.0%)3 (6.1%) 
 Retired38 (7.8%)26 (5.9%)12 (24.5%) 
 Student8 (1.6%)8 (1.8%)0 (0%)< 0.001
Smoking history
 Yes40 (8.2%)34 (7.8%)6 (12.2%) 
 No434 (89.1%)391 (89.3%)43 (87.8%) 
 Unknown13 (2.7%)13 (2.7%)0 (0%)0.331
Comorbidities
 Hypertension99 (20.3%)73 (16.7%)26 (53.1%)< 0.001
 Diabetes29 (6.0%)22 (5.0%)7 (14.3%)0.009
 Cardiovascular disease11 (2.3%)7 (1.6%)4 (8.2%)0.003
 Malignancy5 (1%)3 (0.7%)2 (4.1%)0.025
 Chronic liver diseases22 (4.5%)20 (4.6%)2 (4.1%)0.877
 Chronic renal diseases7 (1.4%)5 (1.1%)2 (4.1%)0.101
 Others32 (6.6%)27 (6.1%)5 (10.2%)0.279
Exposure to confirmed cases186 (38.2%)173 (39.5%)13 (26.5%)0.077
Family cluster
 0392 (80.5%)352 (80.4%)40 (81.6%) 
 167 (13.8%)63 (14.4%)4 (8.2%) 
 212 (2.5%)12 (2.7%)0 (0%) 
 ≥ 316 (3.3%)11 (2.5%)5 (10.2%)0.031
Recent travel or residence to/in epidemic area309 (63.4%)285 (65.1%)24 (49.0%)0.027
Time from onset of symptom to admission2 (3)2 (3)3 (5)0.10
  1. Data are expressed as mean ± standard deviation (SD), median (interquartile range), or number (percent). Comparisons between mild and severe cases were performed by the Mann-Whitney U test or a chi-square test