| Knowledge level | Practice |
| p-value | |
| Bad n (%) | Good n (%) | OR (CI of 95%) | ||
| Insufficient (N = 178) | 54 (30.3) | 124 (69.7) | 0.62 [0.39 - 0.98] | 0.03 |
| Sufficient (N = 153) | 63 (41.2) | 90 (58.8) | 1 |
|