| Results |
| Favourable |
P < 0.10 in favour of the intervention, or described as ‘statistically significant’ |
| Neutral |
P > 0.10, or described as ‘no difference between groups’ |
| Unfavourable |
P < 0.10 in favour of the comparator, or described as ‘favouring the non-intervention comparator’ |
| Conclusions |
| Positive-strong |
Authors state that there is clear evidence for the effectiveness of the intervention, and no further research is needed |
| Positive-weak |
Authors state that there is evidence for the effectiveness of the intervention, but more research is needed to confirm the findings |
| Neutral |
Authors state that there is no or insufficient evidence about whether the intervention is effective or not, and more research is needed to reach a conclusion |
| Negative-weak |
Authors state that there is evidence against the use of the intervention, but more research is needed to confirm the findings |
| Negative-strong |
Authors state that there is clear evidence against the use of the intervention, and no further research is needed |
