| 2020 | 2022 | Lost | ||
| n | % | n | % | |
Cases | 76 | 33.3 | 74 | 33.0 | 2 |
Controls | 152 | 66.7 | 150 | 67.0 | 2 |
Total | 228 | 100 | 224 | 100 | 4 |