Table 2.

Association of antibody formation with clinical condition (N = 957).

IgG Antibody	Unadjusted Odds ratio	95% CI	Adjusted Odds ratio	95% CI
Age	1.03	1.03–1.04∗∗∗	1.01	1.00–1.02∗
Sex
F	Reference	Reference	Reference	Reference
M	1.04	0.8–1.4	1.13	0.8–1.5
Days from onset of symptoms	1.2	1.1–1.2∗∗∗	1.1	1.07–1.1∗∗∗
Clinical Severity
Mild	Reference	Reference	Reference	Reference
Moderate	5.4	3.7–7.9∗∗∗	2.9	2–4.4∗∗∗
Severity	12.7	5.9–26.3∗∗∗	3.5	1.6–7.9∗∗
Co-morbidity	3.1	2.4–4∗∗∗	1.9	1.3–2.6∗∗∗
IgM Antibody
Age	1.03	1.02–1.04∗∗∗	1.0	0.9–1.01
Sex
F	Reference	Reference	Reference	Reference
M	1.3	1.01–1.8∗	1.5	1.1–2.1∗
Days from onset of symptoms	1.1	1.07–1.1∗∗∗	1.05	1.03–1.08∗∗∗
Clinical Severity
Mild	Reference	Reference	Reference	Reference
Moderate	5.2	3.7–7.4∗∗∗	3.3	2.3–4.8∗∗∗
Severity	4.6	2.8–7.5∗∗∗	1.9	1.01–3.4∗
Co-morbidity	2.9	2.2–3.8∗∗∗	2.1	1.5–2.9∗∗∗

∗<0.05, ∗∗<0.01, ∗∗∗<0.001.