Table 4. Comparison of toothbrush contamination with Escherichia coli in four study groups.
| Groups | E. coli | Total | |
| Absent | |||
| Group I- Toothbrush with lids inside bathrooms with an attached toilet | Count | 9 | 9 |
| % | 100.00% | 100.00% | |
| Group II- Toothbrush without lids inside bathrooms with an attached toilet | Count | 9 | 9 |
| % | 100.00% | 100.00% | |
| Group III- Toothbrush with lids outside bathrooms | Count | 9 | 9 |
| % | 100.00% | 100.00% | |
| Group IV -Toothbrush without lids outside bathrooms | Count | 9 | 9 |
| % | 100.00% | 100.00% |