This scale was adapted to use for rating the clinical trials in the CPG database. Each clinical trial in the database was assigned
a Jadad rating as part of its quality rating. 

Instructions 

This is not the same as being asked to review a paper. It should not take more than 10 minutes to score a report, and there are
no right or wrong answers. Please read the article and try to answer the following questions (see attached instructions): 

   1. Was the study described as randomized (this includes the use of words such as randomly, random, and randomization)? 

   2. Was the study described as double blind? 

   3. Was there a description of withdrawals and dropouts? 

Scoring the items 

Either give a score of 1 point for each “yes” or 0 points for each “no”. There are no in-between marks. 

Give one additional point if: 

For question 1, the method to generate the sequence of randomization was described, and it was appropriate (for example, table of random numbers or computer generated) 

and (or): 

If for question 2, the method of double blinding was described, and it was appropriate (for example, identical placebo, active placebo, dummy) 

Deduct 1 point if: 

For question 1, the method to generate the sequence of randomization was described, and it was inappropriate (for example, patients were allocated alternately, according to date of birth, or hospital number) 

and (or); 

For question 2, the study was described as double blind, but the method of blinding was inappropriate (for example, comparison of tablet vs injection with no double dummy) 

Guidelines for assessment 

1. Randomization 

A method to generate the sequence of randomization will be regarded as appropriate if it allowed each study participant to have the same chance of receiving each intervention and the investigators could not predict which treatment was next. Methods of allocation using date of birth, date of admission, hospital numbers, or alternation should not be regarded as appropriate. 

2. Double blinding 

A study must be regarded as double blind if the word “double blind” is used. The method will be regarded as appropriate if it is stated that neither the person doing the assessments nor the study participant could identify the intervention being assessed, or if in the absence of such a statement the use of active placebos, identical placebos, or dummies is mentioned. 

3. Withdrawals and dropouts 

Participants who were included in the study but did not complete the observation period or who were not included in the analysis must be described. The number and the reasons for withdrawal in each group must be stated. If there were no withdrawals, it should be stated in the article. If there is no statement on withdrawals, this item must be given no points.