Table 2.
clinical characteristics and underlying diseases.
| Characteristics | Patients (N = 659) | ARDS patients (N = 76) | Non-ARDS patients (N = 583) | P value |
|---|---|---|---|---|
| Clinical symptoms—no./total no. (%) | ||||
| Severity evaluation at admission | 0.000 | |||
| Mild | 59/643(9.2%) | 0/76(0.0%) | 59/567(10.4%) | |
| Ordinary | 485/643(75.4%) | 15/76(19.7%) | 470/567(82.9%) | |
| Severe | 67/643(10.4%) | 29/76(38.2%) | 38/567(6.7%) | |
| Critical | 32/643(5.0%) | 32/76(42.1%) | 0/567(0.0%) | |
| Fever on the first day of admission—temperature | 439/659(66.6%) | 65/76(85.5%) | 374/583(64.2%) | 0.000 |
| Median (IQR)—℃ | 37.5(36.8–38.2) | 37.9(37.3–38.5) | 37.4(36.8–38.1) | 0.000 |
| Distribution—no./total no. (%) | 0.000 | |||
| < 37.3℃ | 275/659(41.7%) | 18/76(23.7%) | 257/583(44.1%) | |
| 37.3–38℃ | 198/659(30.0%) | 24/76(31.6%) | 174/583(29.8%) | |
| 38.1–39℃ | 153/659(23.2%) | 24/76(31.6%) | 129/583(22.1%) | |
| > 39℃ | 33/659(5.0%) | 10/76(13.2%) | 23/583(3.9%) | |
| Cough | 452/658(68.7%) | 61/76(80.3%) | 391/582(67.2%) | 0.025 |
| Expectoration | 261/659(39.6%) | 37/76(48.7%) | 224/583(38.4%) | 0.105 |
| Dry cough | 191/644(29.7%) | 26/75(34.7%) | 165/569(29.0%) | 0.495 |
| Yellow sputum | 32/643(5.0%) | 3/73(4.1%) | 29/570(5.1%) | 0.049 |
| Hemoptysis | 10/626(1.6%) | 4/73(5.5%) | 6/553(1.1%) | 0.017 |
| Sore throat | 81/635(12.8%) | 9/72(12.5%) | 72/563(12.8%) | 0.051 |
| Stuffy nose | 24/631(3.8%) | 1/72(1.4%) | 23/559(4.1%) | 0.506 |
| Muscle ache | 108/633(17.1%) | 7/72(9.7%) | 101/561(18.0%) | 0.095 |
| Fatigue | 221/646(34.2%) | 27/73(36.9%) | 194/573(33.9%) | 0.366 |
| Shortness of breath | 110/635(17.3%) | 45/76(59.2%) | 65/559(11.6%) | 0.000 |
| Gastrointestinal symptoms | 121/645(18.8%) | 14/74(18.9%) | 107/571(18.7%) | 0.948 |
| Diarrhea | 91/607(15.0%) | 15/73(20.5%) | 76/534(14.2%) | 0.179 |
| Vomiting | 18/603(3.0%) | 5/73(6.8%) | 13/530(2.4%) | 0.054 |
| Nausea | 60/609(9.9%) | 5/73(6.8%) | 55/536(10.3%) | 0.323 |
| Encephalopathy | 3/617(0.5%) | 0/73(0.0%) | 3/544(0.6%) | 0.590 |
| Headache | 67/614(10.9%) | 6/73(8.2%) | 61/541(11.3%) | 0.450 |
| Underlying diseases—no./total no. (%) | ||||
| Basic disease | 274/657(41.7%) | 43/76(56.6%) | 231/581(39.8%) | 0.006 |
| Hypertension | 167/641(26.1%) | 37/76(48.7%) | 130/565(23.0%) | 0.000 |
| Heart disease | 23/628(3.7%) | 3/73(4.1%) | 20/555(3.6%) | 0.829 |
| Diabetes | 66/628(10.5%) | 13/73(17.8%) | 53/555(9.5%) | 0.041 |
| Fatty liver | 65/610(10.7%) | 12/73(16.4%) | 53/537(9.9%) | 0.088 |
| COPD | 7/614(1.1%) | 1/73(1.4%) | 6/541(1.1%) | 0.590 |
| Asthma | 3/614(0.5%) | 0/73(0.0%) | 3/541(0.6%) | 0.524 |
| Malignancy | 9/629(1.4%) | 1/73(1.4%) | 8/556(1.4%) | 0.971 |
| Immunosuppressant | 1/614(0.2%) | 1/73(1.4%) | 0/541(0.0%) | 0.119 |
| Blood system diseases | 2/613(0.3%) | 1/73(1.4%) | 1/540(0.2%) | 0.096 |
| Chronic hepatopath | 29/631(4.6%) | 5/73(6.8%) | 24/558(4.3%) | 0.328 |
| Chronic nephrosis | 6/616(1.0%) | 1/73(1.4%) | 5/543(0.9%) | 0.756 |
| Pneumonia on admission | 591/647(91.3%) | 75/76(98.7%) | 516/571(90.4%) | 0.056 |
| Acute kidney injury on admission | 9/652(1.4%) | 3/76(3.9%) | 6/576(1.0%) | 0.076 |
| With other respiratory virus infections | 5/569(0.9%) | 2/73(2.7%) | 3/496(0.6%) | 0.126 |
COPD, chronic obstructive pulmonary disease; no., number.
Data are presented as medians (interquartile ranges, IQR) and no./total no. (%).