| Variable | Boy | Girl | ||||
| 2nd Grade n (%) | 3rd grade n (%) | McNemar Test | 2nd Grade n (%) | 3rd grade n (%) | McNemar Test | |
| Proper timing to wear a condom (triple choices) | 484 | 448 | n.s. | 445 | 413 | n.s. |
| Correct answer | 237 (49.0) | 209 (46.7) | 253 (56.9) | 219 (53.0) | ||