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The 5-level scores of global quality score and DISCERN.
| Scale, score | Level | |
| Global quality score | ||
|
|
1 | Very poor |
|
|
2 | Poor |
|
|
3 | Fair |
|
|
4 | Good |
|
|
5 | Excellent |
| DISCERN | ||
|
|
1 | Unreliable |
|
|
2-3 | Less reliable |
|
|
4-5 | Fairly reliable |
|
|
6-7 | Relatively reliable |
|
|
8 | Reliable |
