We included both parallel group and crossover trials.
我们同时纳入平行组别与交叉设计的试验。
The results from the split-mouth trials were consistent with those of the parallel group trials.
分口试验的结果与平行分组试验一致。
MATERIALS and METHODS: This was a randomized, double-blind, placebo controlled, parallel group, multicenter study.
材料和方法：这是一项随机、对照、双盲、平行分组、多中心的研究。
Two parallel group trials found no significant difference in machine usage, whereas a cross-over study found a significant difference.
两项平行组别试验未发现机器使用有意义的差异，然而，一项交叉试验显示有意义的差异。
Oral prolonged release beclomethasone dipropionate and prednisone in the treatment of active ulcerative colitis: results from a double-blind, randomized, parallel group study.
口服缓释丙酸倍氯米松、强的松治疗活动性溃疡性结肠炎：一项双盲、随机、平行组研究结果。
Oral prolonged release beclomethasone dipropionate and prednisone in the treatment of active ulcerative colitis: results from a double-blind, randomized, parallel group study.
口服缓释丙酸倍氯米松、强的松治疗活动性溃疡性结肠炎：一项双盲、随机、平行组研究结果。
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