How many kinds of drugs are now used by children off-lable?1) 840.2) 1400.3) 560.

问题描述:

How many kinds of drugs are now used by children off-lable?1) 840.2) 1400.3) 560.
“Once approved,” explains Daneman,“it’s available on the market and doctors can prescribe it for any indication they’d like to.” Even if it has not been tested specifically in children,he says,“physicians may start to use it either in small trials or what we call off-label (use of a prescription drug to treat a condition for which the drug has not been approved) in children.”
How Common Is Off-label Use?
Dr.Michael Rieder,director of the Adverse Drug Reaction Clinic at the Children’s Hospital of Western Ontario,says,“drugs commonly used in children,such as antibiotics and asthma drugs,are tested in children.” But,he says,“there is a misconception that children take only those drugs.We did a study looking at a million kids in Canada over a year.It turns out they used 1,400 different drugs,of which 60 percent have not been tested,or approved for use,in chil
“...what we call off-label (use of a prescription drug to treat a condition for which the drug has not been approved) in children.”
”It turns out they used 400 different drugs,of which 60 percent have not been tested,or approved for use,in children。“
被这两句话搞晕了。特别是”,or approved for use,“

很高兴能够在这里回答你的问题,
选 1 840
文中说了用了1400种药,其实有60%的未经实验室检验,所以是840种.我感觉off-label 是指"(use of a prescription drug ...... not been approved)"而在下一句种又出现”or approved for use, “怎么又变成批注的了请指点!!!没有任何不符的地方呀 what we call off-label (use of a prescription drug to treat a condition for which the drug has not been approved这句话已经对off-label进行了注释,即这些药使用并没有经过授权允许 of which 60 percent have not been tested, or approved for use, in children。“这里的or approved for use其实是一种省略,完整的应该是orhave not been approved for use也是说60%的药未经检测或授权使用这两句话意思是相符的