问题
问答题
某病的患病率为10%,现采用某种方法对1000人进行该病的筛查,已知这种方法的灵敏度和特异度各为90%和80%,试问:
将有多少人被诊断为阳性(异常)?这些阳性者患该病的可能性有多大?( 请列表计算,并写出简单计算步骤 )
答案
参考答案:
某病的患病率为10%,现采用某种方法对1000人进行该病的筛查,已知这种方法的灵敏度和特异度各为90%和80%,试问:
将有多少人被诊断为阳性(异常)?这些阳性者患该病的可能性有多大?( 请列表计算,并写出简单计算步骤 )
参考答案:
用方框中所给的词语的适当形势填空,使短文正确、通顺、连贯(每词限用一次)
4 them . If we 5 our zoos, they won’t have enough money to take care of so 6 fine animals. Therefore, People should go and visit the zoos more often to learn about animals and help to protect them 7 . However, some people don’t think so. They think zoos are terrible places for animals to live.“I’ve visited a lot of zoos in my life, and I have never seen one I like or one that 8 animals to live in .”Jenny said The animals 9 in small cages and can 10 move at all .What’s more, they are only given food once a week That’s terrible. |