Table 1.
Impact of mixed EI vaccination during the 2003 EI outbreak in Newmarket (UK), from [26]. Significance was set at p-value ≤ 0.05 (bold text).
| Variable | Category | EI Cases | Controls | Odds Ratio | p-Value |
|---|---|---|---|---|---|
| Number of EI vaccines administered | 1 type | 89 (76.7%) | 27 (23.3%) | Reference | na |
| 2 types | 110 (68.3%) | 51 (31.7%) | 0.65 | 0.13 | |
| 3 types | 57 (55.3%) | 46 (44.7%) | 0.38 | 0.001 | |
| ≥4 types | 15 (71.4%) | 6 (28.6%) | 0.76 | 0.6 | |
| Last EI vaccine administered | Whole inactivated, hydory-aluminium adjuvanted vaccine | 193 (79.1%) | 51 (20.9%) | Reference | na |
| Other type | 78 (49.7%) | 79 (50.3%) | 0.26 | <0.001 |