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Percentage of positive results and significance level of differences of antibody positivity rates at 4-10 weeks and 6 months after infection1.
| Number of sera | Roche | Abbott N | Siemens | Euroimmun | |
|---|---|---|---|---|---|
| 4-10 weeks | 48 | 95.8% | 83.3% | 100% | 89.6% |
| 6 months | 53 | 94.3% | 45.3% | 100% | 83.0% |
| Difference | - | 1.5% | 38.0% | 0% | 6.6% |
| Significance level (p) | - | 0.7308 | 0.0001* | - | 0.3402 |
The tests were compared with the Chi-squared test
Significant difference (p < 0.05).
