Table 2.
Spearman’s correlation coefficients between the age at the sample acquisition date and the anti-spike protein antibody titers. The p-value for age at sample acquisition was 0.00238. The p-value for anti-spike protein IgA antibodies was 0.00008 and for IgG anti-bodies 0.00108.
| Population | n | Age in Years at Sample Acquisition | Anti-Spike Protein Antibodies | Spearman’s Correlation Coefficient with 0.95 Confidence Interval | ||
|---|---|---|---|---|---|---|
| Mean (SD) | Median (q25, q75) | Mean (SD) | Median (q25, q75) | |||
| IgA 1: All individuals | 80 | 39.4 (12.31) | 37 (29, 49) | 4.88 (2.73) | 4.94 (2.48, 8.03) | −0.153 [−0.382, 0.092] |
| IgA 1: Individuals with only first vaccination | 27 | 40.25 (13.69) | 39 (28, 50) | 3.87 (2.28) | 3.71 (1.73, 5.19) | −0.216 [−0.599, 0.187] |
| IgA 2: Individuals with first and second vaccination | 53 | 38.96 (11.66) | 36 (30, 48) | 5.39 (2.82) | 5.5 (2.81, 8.52) | −0.078 [−0.367, 0.207] |
| IgG 1: All individuals | 80 | 39.4 (12.31) | 37 (29, 49) | 4.96 (2.47) | 4.97 (3.02, 7.52) | −0.213 [−0.440, 0.044] |
| IgG 1: Individuals with only first vaccination | 27 | 40.25 (13.69) | 39 (28, 50) | 2.96 (1.69 | 3.34 (1.41, 4.33) | −0.142 [−0.569, 0.296] |
| IgG 2: Individuals with first and second vaccination | 53 | 38.96 (11.66) | 36 (30, 48) | 5.98 (2.18) | 6.08 (4.90, 8.08) | −0.211 [−0.501, 0.035] |
1 Time from first vaccination, 2 time from second vaccination.