Table 4.
Knowledge among the Cracks in the Ice–naïve sample at baseline and after website exposure, indicating the number and percentage of people giving correct answers to knowledge statements (N=1789).
| Knowledge statement | Baseline, n (%) | Postexposurea, n (%) |
| Methamphetamines (including ice) are the most popular illicit drugs in Australia | 743 (41.53) | 1004 (56.12) |
| Most teenagers have used ice | 1325 (74.06) | 1418 (79.26) |
| Ice is generally more potent (strong) than speed | 1445 (80.77) | 1561 (87.25) |
| You always know what you’re taking when you use ice | 1663 (92.95) | 1702 (95.13) |
| Using ice can affect your sleep | 1705 (95.30) | 1759 (98.32) |
| Taking ice with other drugs can reduce the risks of harm | 1620 (90.55) | 1660 (92.78) |
| Ice use can lead to serious long-term physical effects | 1745 (97.54) | 1757 (98.21) |
| It is impossible to break an ice dependence | 1490 (83.28) | 1651 (92.28) |
| You can go to jail for using methamphetamines, including ice | 1334 (74.56) | 1342 (75.01) |
| It is legal to share ice with friends | 1544 (86.30) | 1473 (82.33) |
| Most of the time, police will not be called when an ambulance is attending a drug overdose | 668 (37.33) | 828 (46.28) |
| It is illegal to drive while under the influence of ice | 1756 (98.15) | 1732 (96.81) |
| The effects of ice are short-lived | 1464 (81.83) | 1542 (86.19) |
| Low doses of ice will not impair driving skills | 1611 (90.05) | 1647 (92.06) |
| Ice will cause psychosis in all people | 1172 (65.51) | 1369 (76.52) |
| Ice use can make you feel agitated or distressed | 1701 (95.08) | 1761 (98.43) |
| Ice use can make you feel paranoid | 1705 (95.30) | 1756 (98.15) |
| Legal penalties for drug offences relating to methamphetamine in Australia are different in each of the states and territories | 1087 (60.76) | 1326 (74.11) |
aAverage knowledge scores increased following exposure to the website (mean 15.2, SE 0.05) compared to the baseline (mean 14.4, SE 0.05; t1788=17.893; P<.001).