| Characteristics of the students | Knowledge score | Test statistic | p-value | |
| <70% n (%) | ≥70% n (%) | |||
| Training Yes No |
10 (20.4) 144 (46.3) |
39 (79.6) 167 (53.7) | χ2(df 1) = 11.60 | <0.001 |
| Age (Year) <17 ≥17 |
83 (37.7) 71 (50.7) |
137 (62.3) 69 (49.3) | χ2(df 1) = 5.90 | 0.02 |
| Nationality Saudi Non-Saudi |
112 (42.1) 42 (44.7) |
154 (57.9) 52 (55.3) | χ2(df 1) = 0.19 | 0.66 |
| Father education ≥Intermediate |
67 (42.4) 87 (43.1) |
91 (57.6) 115 (56.9) | 0.02 | 0.90 |
| Mother education ≥Intermediate |
94 (47.2) 60 (37.3) |
105 (52.8) 101 (62.7) | χ²(df 1) = 3.61 | 0.06 |
| House Owned Rent |
67 (50.0) 87 (38.5) |
67 (50.5) 139 (61.5) | χ²(df 1) = 4.55 | 0.03 |
| Income <5000 5000 - 10,000 >10,000 |
42 (35.3) 70 (43.8) 40 (51.9) |
77 (64.7) 90 (56.2) 39 (48.1) | χ2(df 2) = 5.51 | 0.06 |