问题
单项选择题
下列哪项不是影响病例对照研究样本大小的主要因素。（）
A．人群中暴露者的比例
B．假定暴露造成的相对危险度
C.要求的显著性水平
D．要求的把握度
E.要求研究的变量的大小
答案
参考答案：E
搜题请搜索小程序“爱下问搜题”
下列哪项不是影响病例对照研究样本大小的主要因素。（）
A．人群中暴露者的比例
B．假定暴露造成的相对危险度
C.要求的显著性水平
D．要求的把握度
E.要求研究的变量的大小
参考答案：E
My mother is a kind and nice woman. 小题1:____ One Sunday night, when I was watching the film Harry Potter very happily, she asked me to go to bed. 小题2:______ that I didn’t move. But for a while, I noticed that she didn’t say anything. 小题3:_____ I was so sad and that I went into my room and cried. I thought “I have only two nights in a week to enjoy the TV. 小题4:_____”The next day she cooked and talked with me as usual. I pretended not to hear, but she didn’t mind and told me why she didn’t allow me to watch TV. 小题5:_____ Then I understood her. I love my mother.
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