Table 4.

Odds ratios for discordance in reporting the outcomes (positive or negative answer to questions about allergies, chronic diseases, and medications/supplements use) between COVID-19 and 2020 flu questionnaires (reference category: concordant reports).

Characteristics	Positive at COVID-19, Negative at 2020 Flu OR, 95% CI	Negative at COVID-19, Positive at 2020 Flu OR, 95% CI
Allergies
Age (years) 24–35 36–50 51–67	Ref 3.57, 1.03–12.3 1.66, 0.36–7.58	Ref 3.86, 1.23–12.1 4.45, 1.33–14.8
Sex Male Female	Ref 1.96, 0.67–5.72	Ref 4.30, 1.60–11.6
Job Medical doctor Nurse Healthcare assistant Medical technician	Ref 1.22, 0.37–4.05 0.29, 0.05–1.64 0.47, 0.08–2.66	Ref 1.33, 0.46–3.87 0.52, 0.15–1.82 0.56, 0.14–2.26
Chronic diseases
Age (years) 24–35 36–50 51–67	Ref 1.40, 0.34–5.76 1.94, 0.45–8.40	Ref 0.55, 0.01–1.32 NA
Sex Male Female	Ref 0.65, 0.23-1.80	Ref 0.95, 0.13-7.01
Job Medical doctor Nurse Healthcare assistant Medical technician	Ref 0.85, 0.21–3.41 1.09, 0.23–5.23 1.03, 0.21–5.09	Ref NA 13.5, 0.81–225.8 NA
Use of medications or supplements
Age (years) 24–35 36–50 51–67	Ref 0.92, 0.39–2.19 1.30, 0.51–3.33	Ref 0.80, 0.04–17.4 1.03, 0.04–27.8
Sex Male Female	Ref 4.25, 1.89–9.56	Ref 1.62, 0.14–18.9
Job Medical doctor Nurse Healthcare assistant Medical technician	Ref 0.91, 0.37–2.22 0.74, 0.25–2.17 0.90, 0.30–2.66	Ref 1.11, 0.05–22.8 1.65, 0.06–46.3 NA

OR, odds ratio, adjusted for sex, age, and job category. CI, confidence interval. Ref, reference category.