Initial overall quality scores by study type, as assessed by two blinded evaluators on the Goodman scale.

Overall score is computed as the sum over the 36 individual items, each one rated from 1 (lowest) to 5 (highest). Minimum and maximum possible overall scale values were 36 and 180. Standard deviation was 19.总体得分通过对36个独立评分条目求和计算得出，每个条目均采用1（最低）至5（最高）的评分等级。该总体量表的最小与最大可能得分分别为36和180，其标准差为19。