| Variable | Good knowledge | Poor knowledge | Total | P-Value (X2, 95% CI) |
| Original skin complexion | ||||
| Light skin | 39 | 104 | 143 | <0.01 |
| Dark skin | 112 | 164 | 276 | |
| Others | 0 | 3 | 3 | |
| Educational Level | ||||
| No formal education | 0 | 15 | 15 | <0.00 |
| Quranic/Sangaya | 4 | 28 | 32 | |
| Primary School certificate | 11 | 53 | 64 | |
| SSCE | 59 | 118 | 177 | |
| Tertiary | 77 | 56 | 133 |