Table 1.
Inclusion criteria met by study sample (N=18,599).
| No. (%) | |
|---|---|
| Inclusion criteria description chief complaint relating to viral illness | |
| Flu | 4,528 (24.35%) |
| Fever | 4,372 (23.51%) |
| Cough | 3,870 (20.81%) |
| Shortness of breath | 3,223 (17.33%) |
| Chest pain | 741 (3.98%) |
| COVID-19 | 469 (2.52%) |
| Cold | 226 (1.22%) |
| Upper respiratory infection | 46 (0.25%) |
| Category of discharge diagnosis based on ICD-10-CM codes designated by clinician | |
| Signs and symptoms involving the respiratory system | 4,317 (23.21%) |
| General symptoms and signs | 3,353 (18.03%) |
| Infectious and communicable diseases | 2,873 (15.45%) |
| Flu-like symptoms including fever, malaise, fatigue, dizziness | 2,337 (12.57%) |
| No ICD-10 code available | 2,275 (12.23%) |
| Respiratory infection | 2,127 (11.44%) |
| COVID-19 | 331 (1.78%) |
| Pain | 282 (1.52%) |
| Signs and symptoms involving the gastrointestinal system | 233 (1.25%) |
| Encounter for other disease, disorder, or symptom | 154 (0.83%) |
| Headache | 77 (0.41%) |
| Signs and symptoms involving the circulatory system | 54 (0.29%) |
| Other symptoms and signs involving the circulatory and respiratory system | 43 (0.23%) |
| Syncope and collapse | 41 (0.22%) |
| Signs and symptoms of mental and behavioral disorders | 22 (0.12%) |
| Abnormal findings through testing and on examination | 20 (0.11%) |
| Signs and symptoms involving the musculoskeletal system | 20 (0.11%) |
| Injuries and environmental health hazards | 16 (0.09%) |
| Disturbances of smell and taste | 12 (0.06%) |
| Encounter for circumstances and disorders related to maternal care, pregnancy, and reproduction | 10 (0.05%) |
| Complications of surgical and medical care, not elsewhere classified | 2 |
COVID-19, coronavirus disease 2019; ICD-10-CM, International Classification of Diseases, 10th Revision, Clinical Modification.