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. Author manuscript; available in PMC: 2012 Feb 6.
Published in final edited form as: Postgrad Med. 2011 Sep;123(5):194–204. doi: 10.3810/pgm.2011.09.2475

Table 2.

CONSORT 2010 Checklist of Information to Include When Reporting a Randomized Trial

Section/Topic Item No Checklist Item Reported on Page No
Title and abstract — — —
1a Identification as a randomized trial in the title — — —
1b structured summary of trial design, methods, results, and conclusions
(for specific guidance see CONSORT for abstracts)
— — —
Introduction — — —
Background and objectives 2a scientific background and explanation of rationale — — —
2b specific objectives or hypotheses — — —
Methods — — —
Trial design 3a Description of trial design (such as parallel, factorial) including allocation ratio — — —
3b Important changes to methods after trial commencement (such as eligibility criteria), with reasons — — —
Participants 4a Eligibility criteria for participants — — —
4b Settings and locations where the data were collected — — —
Interventions 5 The interventions for each group with sufficient details to allow
replication, including how and when they were actually administered
— — —
Outcomes 6a Completely defined prespecified primary and secondary outcome
measures, including how and when they were assessed
— — —
6b Any changes to trial outcomes after the trial commenced, with reasons — — —
Sample size 7a How sample size was determined — — —
7b When applicable, explanation of any interim analyses and stopping guidelines — — —
Randomization — — —
 Sequence generation 8a Method used to generate the random allocation sequence — — —
8b Type of randomization; details of any restriction (such as blocking and block size) — — —
 Allocation concealment
mechanism
9 Mechanism used to implement the random allocation sequence
(such as sequentially numbered containers), describing any steps taken
to conceal the sequence until interventions were assigned
— — —
 Implementation 10 Who generated the random allocation sequence, who enrolled
participants, and who assigned participants to interventions
— — —
Blinding 11a If done, who was blinded after assignment to interventions
(for example, participants, care providers, those assessing outcomes) and how
— — —
11b If relevant, description of the similarity of interventions — — —
Statistical methods 12a Statistical methods used to compare groups for primary and secondary outcomes — — —
12b Methods for additional analyses, such as subgroup analyses and adjusted analyses — — —
Results — — —
Participant flow (a diagram
is strongly recommended)
13a For each group, the numbers of participants who were randomly assigned,
received intended treatment, and were analyzed for the primary outcome
— — —
13b For each group, losses and exclusions after randomization, together with reasons — — —
Recruitment 14a Dates defining the periods of recruitment and follow-up — — —
14b Why the trial ended or was stopped — — —
Baseline data 15 A table showing baseline demographic and clinical characteristics for each group — — —
Numbers analysed 16 For each group, number of participants (denominator) included in each analysis
and whether the analysis was by original assigned groups
— — —
Outcomes and estimation 17a For each primary and secondary outcome, results for each group, and the
estimated effect size and its precision (such as 95% confidence interval)
— — —
17b For binary outcomes, presentation of both absolute and relative effect sizes
is recommended
— — —
Ancillary analyses 18 Results of any other analyses performed, including subgroup analyses and adjusted
analyses, distinguishing pre-specified from exploratory
— — —
Harms 19 All important harms or unintended effects in each group (for specific
guidance see CONSORT for harms)
— — —
Discussion — — —
Limitations 20 Trial limitations, addressing sources of potential bias, imprecision,
and, if relevant, multiplicity of analyses
— — —
Generalizability 21 Generalizability (external validity, applicability) of the trial findings — — —
Interpretation 22 Interpretation consistent with results, balancing benefits and harms,
and considering other relevant evidence
— — —
Other information — — —
Registration 23 Registration number and name of trial registry — — —
Protocol 24 Where the full trial protocol can be accessed, if available — — —
Funding 25 sources of funding and other support (such as supply of drugs), role of funders — — —

Reproduced with permission from BMJ.37