Quality summary scores for qualitative studies (adapted from Downe20)
| Score | Description |
| 1 | No or few flaws: credibility, transferability, dependability and confirmability is high. |
| 2 | Some flaws: unlikely to affect the credibility, transferability, dependability or confirmability. |
| 3 | Some flaws, which may affect the credibility, transferability, dependability and/or confirmability |
| 4 | Significant flaws, which are very likely to affect the credibility, transferability, dependability and/or confirmability |