Table 2.
Factors associated with the presence of SARS-CoV-2 IgG antibodies (n = 412).
|
Model I Crude OR [95% CI] |
Model II Adjusted OR [95% CI] |
|
|---|---|---|
| Disease course | ||
| Asymptomatic/Mild | 1.0 | 1.0 |
| Moderate/Severe | 1.69 [1.10 – 2.84] | 1.77 [1.04 – 3.01] |
| Comorbidity | ||
| Yes | 1.0 | 1.0 |
| No | 1.06 [0.64 – 1.75] | 1.07 [0.63 – 1.85] |
| Time since positive rt-PCR | ||
| 0–59 days | 1.0 | 1.0 |
| 60–119 days | 0.38 [0.21–0.69] | 0.35 [0.19–0.65] |
| 120 days and more | 0.19 [0.09–0.37] | 0.18 [0.09–0.37] |
| Sex | ||
| Male | - | 1.0 |
| Female | - | 1.05 [0.64–1.73] |
| Age group | ||
| 16–29 years | - | 1.0 |
| 30–49 years | - | 1.20 [0.63–2.32] |
| 50–69 years | - | 0.99 [0.44–1.64] |
| 70 years and older | - | 2.91 [0.60–9.65] |
1.0 = reference category; OR, Odd Ratio; CI, Confidential Interval. This table presents the unadjusted (Model I) and the age and sex-adjusted odds ratio (OR) (Model II) of seropositivity (Yes/No) by participant characteristics. The odds ratio was calculated to describe the risk of different groups in positive ELISA serums compared with non-positive ELISA sera. n = 412.