Table 3.
Quality review
| Study | Study type | Quality tool | Quality rating |
|---|---|---|---|
| Dimitrov et al15 | Narrative review | NIH quality assessment tool | Good |
| Nenova et al29 | Systematic review | NIH quality assessment tool | Fair |
| Monti et al34 | Pre–post study with no control | NIH quality assessment tool | Poor |
| Roberts32 | Pre–post study with no control | NIH quality assessment tool | Fair |
| Hamidian et al35 | Randomised controlled trial | NIH quality assessment tool | Good |
| Farahimanesh et al36 | Pre–post study with no control | NIH quality assessment tool | Fair |
| Rissanen et al31 | Randomised controlled trial | NIH quality assessment tool | Fair |
| Offidani et al37 | Pre–post study with no control | NIH quality assessment tool | Poor |
| Ochoa et al38 | Case–control study | NIH quality assessment tool | Fair |
| Sarizadeh et al33 | Randomised controlled trial | NIH quality assessment tool | Poor |
| Chu et al39 | Pre–post study with no control | NIH quality assessment tool | Poor |
NIH, National Institutes of Health.