Table 2.
Time-Dependent Covariate Cox Proportional Hazards Model for Viral RNA Clearance (Cox Model 2)
| Variable | HR | aHR | 95% CI | P Value |
|---|---|---|---|---|
| Change from undetectable to detectable Mt. Sinai S-specific oral fluid IgG | 0.96 | 0.96 | 0.92–0.99 | .020 |
| BMI ≥25 kg/m2 (referent: BMI <25 kg/m2) | 0.44 | 0.29 | 0.14–0.61 | .001 |
| Diabetes | 2.11 | 2.49 | 1.09–5.67 | .030 |
| Immunocompromised | 0.68 | 0.35 | 0.12–1.02 | .055 |
| Fever as 1 of first 3 COVID-19 symptoms | 1.72 | 2.23 | 1.05–4.71 | .036 |
| Race/ethnicity (referent: non-Hispanic White) | ||||
| African American or Black race, any ethnicity | 0.73 | 0.85 | 0.42–1.73 | .659 |
| Non-White, non-Black, non-Hispanic | 1.20 | 0.56 | 0.14–2.23 | .408 |
| Hispanic of any race except Black | 0.79 | 1.48 | 0.41–5.39 | .549 |
Abbreviations: aHR, adjusted hazard ratio; BMI, body mass index; COVID-19, coronavirus disease 2019; HR, hazard ratio; IgG, immunoglobulin G; S, SARS-CoV-2 spike protein.