| Ethnicity | Frequency | Percent | Cumulative Percent |
| Cases |
|
|
|
| Sinhala | 23 | 48.9 | 48.9 |
| Tamil | 14 | 29.8 | 78.7 |
| Muslim | 10 | 21.3 | 100.0 |
| Total | 47 | 100.0 |
|
| Control |
|
|
|
| Sinhala | 48 | 51.1 | 51.1 |
| Tamil | 28 | 29.8 | 80.9 |
| Muslim | 18 | 19.1 | 100.0 |
| Total | 94 | 100.0 |
|