Research Article
Clinical Performance of Rapid Antigen Tests for the Detection of SARS-CoV-2 Infection in the Emergency Department and Community: A Retrospective Study
Table 2
Characteristics and antigen result of patients in the ED.
| | Characteristic | RT-PCR | | Positive (n = 38) | Negative (n = 696) |
| | Age | 64 (IQR: 55–72) | 64 (IQR: 50–74) | | Sex | | | | Male | 22 (57.9%) | 410 (58.9%) | | Female | 16 (42.1%) | 286 (41.1%) | | Vital signs at triage | | | | BT (degree Celsius) | 36.7 (IQR: 36.4–37.1) | 36.6 (IQR: 36.2–37.2) | | RR (breaths per minute) | 20 (IQR: 18–20) | 20 (IQR: 18–20) | | SPO2 (%) | 96 (IQR: 93–97) | 98 (IQR: 96–98) | | Symptomatic | 37 (97.4%) | 572 (82.2%) | | Fever/Chills | 26 (68.4%) | 207 (29.7%) | | Cough | 23 (60.5%) | 89 (12.8%) | | SOB | 18 (47.4%) | 107 (15.4%) | | Chest pain/tightness | 3 (7.9%) | 58 (8.3%) | | Headache/Dizziness | 4 (10.5%) | 55 (7.9%) | | Fatigue | 6 (15.8%) | 69 (9.9%) | | Loss of taste or smell | 2 (5.3%) | 2 (0.3%) | | Sore throat | 7 (18.4%) | 22 (3.2%) | | Diarrhea | 6 (15.8%) | 31 (4.5%) | | Muscle aches | 6 (15.8%) | 12 (1.7%) | | Abdominal pain | 1 (2.6%) | 127 (18.2%) | | Other symptoms | 9 (23.7%) | 166 (23.9%) | | Asymptomatic | 1 (2.6%) | 124 (17.8%) | | Time from onset to laboratory test (days) | | | | <7 days | 27 (71.1%) | 448 (64.4%) | | ≥7 days | 8 (21.1%) | 58 (8.3%) | | Unknown | 2 (5.3%) | 66 (9.5%) | | Antigen result | | | | Antigen positive | 14 (36.8%) | 1 (0.2%) | | Antigen negative | 24 (63.2%) | 695 (99.8%) |
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Other symptoms included vomiting, poor appetites and drowsy consciousness. RT-PCR, reverse transcription-polymerase chain reaction; ED, emergency department; IQR, interquartile range; BT, body temperature; RR, respiratory rate; SpO2, oxygen saturation; SOB, shortness of breath. |
