SCC categories | SCC level (×1000 cells/ml) | Odds-ratio (OR) | 95% confidence interval of the OR |
1. Uninfected | <150 | Reference | - |
2. Healed | >150 before AI date | 1.19 | 0.77 - 1.83 |
<150 after AI date | |||
3. New infection | <150 before AI date | 1.29 | 0.88 - 1.88 |
>150 after AI date | |||
4. Chronic infection | >150,000 before and after AI date | 1.48 | 1.00 - 2.18 |
Total infected (2 + 3 + 4) | <150 | 1.33 | 0.99 - 1.78 |