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Table 2 The Jadad score

From: Hyperbaric oxygen therapy in China

Generation of allocation sequence  0 no double-blinding
 2 computer-generated random numbers Description of withdrawals and drop-outs
 1 not described  1 numbers and reasons are described
Allocation concealment  0 numbers and reasons are not described
 3 central randomization  Efficacy of randomization
 2 sealed envelopes or similar  2 pre-treatment variables in tabular from
 1 not described or inadequate  1 balance of pre-treatment variables
Investigator blindness  1 balance of pre-treatment variables mentioned but not in tabular form
 2 identical placebo tables or similar  0 no information report
 1 inadequate or not described