Table II.
Factors associated with decreased titre following vaccination
| Variables | Decreased titre | Total | OR (CI) | P | |
|---|---|---|---|---|---|
|
| |||||
| Yes, n (%) | No, n (%) | ||||
| Age (yr) | |||||
| <45 | 47 (32.9) | 96 (67.1) | 143 | ||
| 45-59 | 5 (12.2) | 36 (87.8) | 41 | 0.912 (0.18-4.52) | 0.910 |
| ≥60 | 4 (25) | 12 (75) | 16 | 0.279 (0.09-0.86) | 0.026 |
| Gender | |||||
| Male | 17 (21.8) | 61 (78.2) | 78 | 2.738 (1.20-6.21) | 0.016 |
| Female | 39 (32) | 83 (68) | 122 | ||
| Diabeties present | |||||
| Yes | 2 (11.1) | 16 (88.9) | 18 | 0.321 (0.05-1.79) | 0.195 |
| No | 54 (29.7) | 128 (70.3) | 182 | ||
| Hypertension | |||||
| Yes | 5 (23.8) | 16 (76.2) | 21 | 2.305 (0.58-9.03) | 0.231 |
| No | 51 (28.5) | 128 (71.5) | 179 | ||
| Previous h/o COVID infection | |||||
| Yes | 15 (71.4) | 6 (28.6) | 21 | 15.955 (4.77-53.32) | 0.001 |
| No | 41 (22.9) | 138 (77.1) | 179 | ||
CI, confidence interval; OR, odds ratio; h/o, history of