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. 2016 May 24;7(26):39216–39230. doi: 10.18632/oncotarget.9581

Table 4. Revised Jadad's Scale.

Random sequence production
 a. Adequate (computer generated random numbers or similar methods) (2 points)
 b. Unclear (a randomized trial but without description of randomization methods) (1 point)
 c. Inadequate (an alternative allocation without randomization) (0 point)
Allocation concealment
 a. Adequate (a central institution-controlled allocation) (2 points)
 b. Unclear (random numerical table or other similar methods) (1 point)
 c. Inadequate (alternative allocation without adequate concealment) (0 point)
Blindness
 a. Adequate (comparable placebo or similar methods) (2 points)
 b. Unclear (a blind trial without details statement) (1 point)
 c. Inadequate (inappropriate blind methods or non-blind trials) (0 point)
Withdrawal
 a. Description (a detailed statement about the numbers and reasons of withdrawals) (1 point)
 b. No description (no statement about the numbers and reasons of withdrawals) (0 point)