Sample studies | Research design | Qualitative (sample size) | Quantitative (sample size) | Other |
Study 1 | Case study | Not specified (NS) | Not specified (NS) |
|
Study 2 | Qualitative | 51 | - |
|
Study 3 | Mixed methods | 18 | 100 |
|
Study 4 | Quantitative | - | 1259 |
|
Study 5 | Case study | 42 | - |
|
Study 6 | Mixed methods | NS | 1775 |
|
Study 7 | Qualitative | 6 | - |
|
Study 8 | Quantitative | - | 393 |
|
Study 9 | Quantitative | - | 402 |
|
Study 10 | Mixed methods | 16 | 130 |
|
Study 11 | Mixed methods | NS | 79 |
|
Study 12 | Case study | 13 | - |
|
Study 13 | Mixed methods | 19 | NS |
|
Study 14 | Mixed methods | 14 | 282 |
|
Study 15 | Mixed methods | 58 | NS |
|
Study 16 | Mixed methods | 10 | 170 |
|
Study 17 | Mixed methods | 5 | 75 |
|
Study 18 | Case study | 4 | 85 |
|
Study 19 | Qualitative | 1 | - |
|
Study 20 | Quantitative | NS | NS |
|
Study 21 | Qualitative | 50 | - |
|
Study 22 | Mixed methods | 12 | 535 |
|
Study 23 | Qualitative | 207 | - |
|
Total average: |
| 30 | 400 |
|