Table 1.
Description of the assessment of CONSORT criteria recommended in the extension to CONSORT for non-inferiority and equivalence trials [11] (R = reporting item, M = methodological item, I = interpretation)
| CONSORT criteria | Included in present evaluation | Category | Description of assessed variables |
|---|---|---|---|
| Specify that the trial is a non-inferiority or equivalence trial |
Yes |
R |
Clearly identified as non-inferiority or equivalence trial in title, abstract or full paper |
| Rationale for using a non-inferiority or equivalence design |
Yes |
R |
Justification stated for using a non-inferiority or equivalence design |
| Eligibility for participants with respect to trials that established efficacy of the reference treatment |
No |
- |
- |
| Interventions intended for each group with respect to trials that established efficacy of the reference treatment |
No |
- |
- |
| Specific objectives and hypothesis concerning non-inferiority or equivalence |
Yes |
R |
Hypothesis stated clearly (text or formula) |
| M |
Margin defined |
||
| Clearly defined primary and secondary outcome measures with respect to trials that established efficacy of the reference treatment |
(Yes) |
R |
Primary outcome identified clearly (not evaluated whether outcome is identical to those in any trial that established efficacy of the reference treatment) |
| Sample size calculation using a non-inferiority or equivalence criterion and specifying the margin with the rationale for its choice. When applicable, explanation of any interim analyses and stopping rules (and whether related to a non-inferiority or equivalence hypothesis) |
Yes |
R |
Sample size calculation presented |
| R |
Elements for recalculation of sample size reported |
||
| M |
Margin considered |
||
| R |
Justification for margin stated |
||
| R |
Interim analyses planned |
||
| Method used to generate random allocation sequence including details of any restriction |
Yes |
R |
Method of randomisation reported |
| R |
Restriction method reported (blocking/stratification/minimisation) |
||
| Method used to implement allocation concealment |
No |
- |
- |
| Who generated the allocation sequence and enrolled and assigned participants |
No |
- |
- |
| Whether participants, those administering the interventions and those assessing the outcome were blinded to group allocation |
Yes |
R |
Method of blinding reported (any blinding; single blind, double blind, open or double dummy design) |
| Statistical methods used to compare groups for primary outcome specifying whether a 1- or 2-sided confidence interval approach was used. Methods for additional analyses (subgroups, adjusted analyses) |
Yes |
R |
Statistical methods used for comparison reported |
| Participant flow through each state of the trial (diagram strongly recommended) |
Yes |
R |
Diagram of flow of participants presented |
| Dates defining the periods of recruitment and follow-up |
Yes |
R |
Dates reported |
| Baseline information for each group |
Yes |
R |
Baseline information presented for each group |
| Number of participants in each group included for each analysis and whether intention-to-treat (ITT) and/or alternative analyses were conducted |
Yes |
R |
Number of participants reported - similar to 13 |
| R |
Analysis sets reported |
||
| M |
Results of ITT and per-protocol analysis presented |
||
| For each outcome, a summary of results for each group and the estimated effect size and its precision (useful: figure showing confidence intervals and margins) |
Yes |
M |
Results presented using a confidence interval |
| R |
Report of confidence level and 1- or 2-sided |
||
| R |
Report of P-value |
||
| R |
Figure presented |
||
| Address multiplicity by reporting any other analyses performed |
No |
- |
- |
| All important adverse events or side effects in each group |
Yes |
R |
Adverse events reported |
| Interpretation of the results taking into account the non-inferiority or equivalence hypothesis, sources of potential bias or imprecision |
Yes |
I |
Interpretation of results presented |
| Interpretation correct (non-inferiority/equivalence/superiority/inferiority/inconclusive result/wrong/incomprehensible by means of presented results) | |||
| Statement on expected advantage | |||
| Generalisability (external validity) of the trial findings |
No |
- |
- |
| General interpretation of the results in the context of current evidence | No | - | - |