某护士以社区为单位,将A社区的50名糖尿病患者设为对照组,给予常规健康教育讲座;将B社区的50名糖尿病患者设为实验组,给予家属监督下的个体化饮食和运动干预。6个月后,评定两组患者的血糖控制情况,该研究设计的类型为( )
A.质性研究
B.相关性研究
C.实验性研究
D.类实验性研究
E.非实验性研究
正确答案是D
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