The incidence and severity of pressure ulcer were compared in two groups.

比较两组患者术中压疮发生率及发生程度。

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The clinical efficacy, thermal enhancement ratio and toxicity were compared in two groups respectively.

分别比较两组的近期疗效和毒性反应，并计算热增强比。

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The in-hospital mortality, cause of death and specific conditions of cardiac rupture were compared in two groups.

比较了两组间临床症状、死亡率及死亡原因，特别对发生心脏破裂的情况进行了研讨。

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Researchers in Glasgow compared two groups of nursery school children - some who took regular active play sessions and others who did not.

BBC: NEWS | UK | Scotland | Glasgow and West | Child obesity solution not simple

Specifically, lung functioning rose 9 percent and 7.5 percent in the two highest dose groups compared with a placebo over 28 days ( read more here).

FORBES: Vertex Scores A Big Win With Its Cystic Fibrosis Experiment