Table 4.
Antibody Levels in Relation to Clinical Features and Timing of Illness Among Antibody-Positive Participants (n = 374)
| Variables | Point Estimates (95% CI) |
|---|---|
| Fevera | |
| Felt feverish but did not take temperature | 0.15 (−0.58 to 0.88) |
| Recorded temperature over 100°F | 0.26 (−0.44 to 0.96) |
| Cough | −0.09 (−0.80 to 0.61) |
| Shortness of breath or difficulty breathing | 0.01 (−0.75 to 0.76) |
| Vomiting | 0.49 (−0.77 to 1.75) |
| Diarrhea/multiple watery stools | 0.32 (−0.47 to 1.11) |
| Loss of smell | −0.21 (−1.43 to 1.02) |
| Loss of taste | −0.64 (−1.87 to 0.60) |
| Body aches | 0.75 (−0.01 to 1.51) |
| Headaches | −0.03 (−0.70 to 0.64) |
| Other Symptomsb | 0.10 (−0.63 to 0.83) |
| Any treatment in hospital for COVID-19 | 0.58 (−0.27 to 1.43) |
| Time Since Beginning of Illnessc | |
| 0–14 days | 0.40 (−2.92 to 3.73) |
| 15–28 days | 1.37 (−0.46 to 3.20) |
| 29–56 days | 0.77 (−0.25 to 1.79) |
| 57–84 days | 0.50 (−0.48 to 1.48) |
| >84 days | −0.41 (−1.52 to 0.69) |
Abbreviations: CI, confidence interval; COVID-19, coronavirus disease 2019.
aReference group: no fever.
bIncludes the following: fatigue, nausea, loss of appetite, conjunctivitis, nasal and sinus congestion, runny nose, sneezing, chest tightness, abdominal pain, and rash.
cReference group: no suspected COVID-19 illness.