Table 1.
Demographics and clinical variables of test cohort patients stratified by SARS-CoV-2 RT-PCR results
| Variables | RT-PCR Positive (N = 236) | RT-PCR Negative (N = 220) | ||
|---|---|---|---|---|
| N = 456 | Mean | SD | Mean | SD |
| Age (years) | 55.3 | 17 | 49.2 | 16.3 |
| BMI kg/m2 | 31.6 | 8.5 | 27.7 | 7.4 |
| CXR–PCR Interval (days) | 3.4 | 3.8 | 3.1 | 14.4 |
| Count | Frequency (%) | Count | Frequency (%) | |
|---|---|---|---|---|
| Sex | ||||
| Female | 113 | 47.9 | 111 | 49.5 |
| Male | 123 | 52.1 | 109 | 50.5 |
| Ethnicity | ||||
| Asian | 2 | 0.9 | 2 | 0.9 |
| Black | 112 | 47.5 | 99 | 45.0 |
| Hispanic | 17 | 7.2 | 0 | 0 |
| Other | 9 | 3.8 | 6 | 2.7 |
| White | 83 | 35.2 | 113 | 51.4 |
| Smoking | ||||
| Never | 155 | 65.7 | 93 | 42.3 |
| Former | 19 | 8.1 | 73 | 33.2 |
| Current | 54 | 22.9 | 54 | 24.5 |
| COPD | 22 | 9.3 | 10 | 4.5 |
| Cystic fibrosis | 1 | 0.4 | 0 | 0 |
| Asthma | 32 | 13.6 | 35 | 15.9 |
| Lung cancer | 2 | 0.8 | 0 | 0 |
| Cancer (other) | 36 | 19.2 | 29 | 13.2 |
| Diabetes mellitus | 92 | 39.0 | 48 | 21.8 |
| Hypertension | 148 | 62.3 | 114 | 51.8 |
| Cardiac disease | 26 | 11.0 | 52 | 23.6 |
| Pulmonary HTN | 23 | 9.7 | 6 | 2.7 |
| Sickle cell disease | 6 | 2.5 | 18 | 8.2 |
| Thalassemia | 0 | 0 | 0 | 0 |
| Organ transplant | 13 | 5.5 | 4 | 1.8 |
| HIV | 1 | 0.4 | 4 | 1.8 |
| Autoimmune | 15 | 6.4 | 14 | 6.4 |
| Chronic liver disease | 7 | 3.0 | 8 | 3.6 |
| Chronic kidney disease | 48 | 20.3 | 17 | 7.7 |
SARS-CoV-2: Severe acute respiratory syndrome coronavirus 2; RT-PCR: Reverse transcription polymerase chain reaction; SD: Standard deviation; BMI: Body mass index; CXR: Chest X-ray; COPD: Chronic obstructive pulmonary disease; HTN: Hypertension; HIV: Human immunodeficiency virus