TABLE 1

Demographics and clinical characteristics of patients with or without any comorbidities

VariablesAny comorbidity
Total (n=1590)No (n=1191)Yes (n=399)
Age (years)48.9±16.344.8±15.260.8±13.4
Incubation period (day)3.6±4.23.7±4.33.5±3.9
Temperature on admission (℃)37.4±0.937.4±0.937.3±0.9
Respiratory rate on admission (breath·min−1)21.2±12.021.2±13.721.3±4.7
Heart rate on admission (beat·min−1)88.7±14.688.5±14.789.2±14.4
Systolic pressure on admission (mmHg)126.1±16.4123.5±15.2133.2±17.5
Diastolic pressure on admission (mmHg)79.5±25.679±28.980.9±12.6
Highest temperature (℃)38.3±1.638.3±1.138.2±2.6
Sex
 Male904/1578 (57.3)667/1182 (56.4)237/396 (59.8)
 Female674/1578 (42.7)515/1182 (43.6)159/396 (40.2)
Smoking status
 Never/unknown1479/1590 (93)1127/1191 (94.6)352/399 (88.2)
 Former/current111/1590 (7)64/1191 (5.4)47/399 (11.8)
Symptoms
 Fever1351/1536 (88)1002/1148 (87.3)349/388 (89.9)
 Conjunctival congestion10/1345 (0.7)7/1014 (0.7)3/331 (0.9)
 Nasal congestion73/1299 (5.6)59/979 (6)14/320 (4.4)
 Headache205/1328 (15.4)151/1002 (15.1)54/326 (16.6)
 Dry cough1052/1498 (70.2)775/1116 (69.4)277/382 (72.5)
 Pharyngodynia194/1317 (14.7)148/999 (14.8)46/318 (14.5)
 Productive cough513/1424 (36)363/1064 (34.1)150/360 (41.7)
 Fatigue584/1365 (42.8)435/1031 (42.2)149/334 (44.6)
 Hemoptysis16/1315 (1.2)9/991 (0.9)7/324 (2.2)
 Shortness of breath331/1394 (23.7)185/1041 (17.8)146/353 (41.4)
 Nausea/vomiting80/1371 (5.8)44/1025 (4.3)36/346 (10.4)
 Diarrhea57/1359 (4.2)39/1023 (3.8)18/336 (5.4)
 Myalgia/arthralgia234/1338 (17.5)174/1007 (17.3)60/331 (18.1)
 Chill163/1333 (12.2)129/1006 (12.8)34/327 (10.4)
Signs
 Throat congestion21/1286 (1.6)16/973 (1.6)5/313 (1.6)
 Tonsil swelling31/1376 (2.3)22/1024 (2.1)9/352 (2.6)
 Enlargement of lymph nodes2/1375 (0.1)1/1027 (0.1)1/348 (0.3)
 Rash3/1378 (0.2)2/1032 (0.2)1/346 (0.3)
 Unconsciousness20/1421 (1.4)11/1063 (1)9/358 (2.5)
Abnormal chest image
 Radiograph243/1590 (15.3)236/1566 (15.1)44 036 (29.2)
 Computed tomography1130/1590 (71.1)1113/1566 (71.1)17/24 (70.8)
Hubei
 Yes647/1590 (40.7)434/1191 (36.4)213/399 (53.4)
 No943/1590 (59.3)757/1191 (63.6)186/399 (46.6)
Wuhan-contacted
 Yes1334/1590 (83.9)983/1191 (82.5)351/399 (88)
 No256/1590 (16.1)208/1191 (17.5)48/399 (12)
Severity254/1590 (16)123/1191 (10.3)131/399 (32.8)
Composite endpoint131/1590 (8.2)54/1191 (4.5)77/399 (19.3)
Death50/1590 (3.1)15/1191 (1.3)35/399 (8.8)
Admission to ICU99/1590 (6.2)45/1191 (3.8)54/399 (13.5)
Invasive ventilation50/1590 (3.1)19/1191 (1.6)31/399 (1.6)

Data are mean±standard deviation, n/N (%), where N is the total number of patients with available data.

COPD: chronic obstructive pulmonary disease; ICU: intensive care unit.