| Authors
Factors | | | | | | | | | | | Total |
| Gender |
|
|
|
| * | * |
|
| * | * | 4 |
| Age | * |
|
|
|
|
|
|
| * | * | 3 |
| School demographic |
| * |
|
|
|
| * |
| * |
| 3 |
| Teaching experiences |
|
| * | * |
|
|
|
|
| * | 3 |
| Students level been taught |
|
|
|
| * | * |
|
|
|
| 2 |
| Teacher qualifications |
|
|
|
|
| * |
| * |
| * | 3 |