배정순서 은폐의 경우 한 번에 표집된 경우에는 낮은 편향이라 평가하였고, 이에 대한 보고는 전체 중 50%에 해당하였다.
In the case of concealment of assignment order, if the samples were sampled at one time, it was evaluated as low bias, and the report about this was 50% of the total.