| Variable | Low knowledge | High knowledge | χ2 | p-value | |
| Gender | Male | 19.6% | 80.4% | 0.511 | 0.475 |
| Female | 21.9% | 78.1% | |||
| Age | 21 years or under | 24.9% | 75.1% | 5.765 | 0.056 |
| 22 - 26 years | 19.2% | 80.8% | |||
| 27 years or over | 16.0% | 84.0% | |||
| Status | Unmarried | 22.6% | 77.4% | 3.728 | 0.032* |
| Married | 14.8% | 85.2% | |||
| Weight | 50 kilograms or under | 28.1% | 71.9% | 11.839 | 0.008** |
| 51 - 60 kilograms | 21.1% | 78.9% | |||
| 61 - 70 kilograms | 21.0% | 79.0% | |||
| Above 70 kilograms | 12.5% | 87.5% | |||
| Nationality | Saudi (from Tabuk) | 21.6% | 78.4% | 0.036 | 0.849 |
| Other | 21.0% | 79.0% | |||
| Faculty | Sciences | 20.9% | 79.1% | 4.562 | 0.472 |
| Education | 26.2% | 73.8% | |||
| Business Management | 18.9% | 81.1% | |||
| Arts | 26.7% | 73.3% | |||
| Engineering | 21.1% | 78.9% | |||
| Arabic language | 11.6% | 88.4% | |||