Table 2.

Risk of bias after Furlan et al⁸²

Author, year	1	2	3	4	5	6	7	8	9	10	11	12	Total
Arora et al, 201172	yes	yes	no	no	no	yes	yes	unsure	yes	no	yes	yes	7
Bartl et al, 201479	yes	yes	no	no	unsure	yes	yes	unsure	yes	no	no	yes	6
Martinez, 201880	yes	yes	no	no	no	yes	yes	no	yes	no	yes	yes	7
Mulders et al, 201984	yes	yes	no	no	no	yes	yes	no	yes	no	yes	yes	7
Sirniö et al, 201985	yes	yes	no	no	n/a	yes	yes	no	yes	no	yes	yes	7
Saving et al, 201983	yes	yes	no	no	no	yes	yes	no	yes	no	yes	yes	7

1. Was the method of randomization adequate?

2. Was the treatment allocation concealed?

3. Was the patient blinded to the intervention?

4. Was the care provider blinded to the intervention?

5. Was the outcome assessor blinded to the intervention?

6. Was the drop-out rate described and acceptable?

7. Was intention-to-treat principle carried out?

8. All reports of the study free of suggestion of selective outcome reporting?

9. Were the groups similar at baseline regarding the most important prognostic indicators?

10. Were co-interventions avoided in all groups?

11. Was the compliance acceptable in all groups?

12. Was the timing of the outcome assessment similar in all groups?