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標題: What does Placebo exactly mean? [打印本頁]

作者: web996his360 時間: 2016-3-15 04:24 PM 標題: What does Placebo exactly mean?

I've been totally confused by this word, perhaps its meaning in English makes me feel faint.
Thanks for your explanation in layman's terms lol.

***The meaning is quoted from Oxford Dictionaries***

A substance that has no physical effects, given to patients who do not need medicine but think that they do, or used when testing new drugs.

作者: 22423090 時間: 2016-3-15 07:33 PM

查了一下中文應該就是安慰劑的意思可是我也不是醫生也不知道真正的用途是甚麼

作者: pop00123 時間: 2016-3-15 07:47 PM

When people think they are sick and need to take medicine, but they actually aren't sick and need no medicine, doctors sometimes will give them a 'Placebo' that looks and feel like medicine. And they really 'feel' better after taking it. Obviously it is psychological comfort.

中文叫做「安慰劑」。
是一種外觀似一般藥物，但卻沒有藥效的「藥」。
用來解決「病人」心理上對藥物治療的渴求。
其現象叫做「安慰劑效應(The Placebo Effect)」

Placebo 也用在藥物研發時的「盲測」(Blind Tests)。

Pla-ce-bo (音似：P拉-西-播)

作者: ichbingut 時間: 2016-3-19 04:08 PM

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作者: c60h1o1 時間: 2016-3-20 12:08 AM

Consider painkillers, which would definitely be affected by people's psychological effect. If the drug being tested is no more effective than the placebo (something that simply look like a drug but does not have any effective chemical), the drug is not useful.

作者: c60h1o1 時間: 2016-3-20 09:42 PM

c60h1o1 發表於 2016-3-20 12:08 AM
Consider painkillers, which would definitely be affected by people's psychological effect. If the dr ...

We are talking about placebos, my dear friend; Under normal circumstances, people indeed are affected by the drugs. However, certain drugs, especially the painkiller, the efficacy of which could be affected by the mind of a person, i.e. the drug would be more effective than it should be if people believe that it is effective. That is why we need PLACEBOS to filter out this psychological effect over drug efficacy. Anyway, do feel free to ask should you have any difficulty in understanding the meaning of placebo, which may be difficult to some.

作者: cherrylinhk 時間: 2016-3-21 11:50 AM

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作者: darkshadow1234 時間: 2016-3-21 08:35 PM

placebo is usually used in drug test
Two group of patient will either in treatment condition (drug) or non-treatment (no drug, probably given a Vitamin pills) condition. If non-treatment group showed a better treatment, it is considered as placebo because they were not given the drug but Vitamin. It is the mental misconception of drug (which actually is vitamin) that lead to better outcome.

作者: citizenkane 時間: 2016-3-21 11:51 PM

At the most basic placebo is most often used in research studies to see if something new makes a difference or not.

For example.

In testing a new drugs efficacy. Group A gets new drug. Group B gets a lactose pill. Lactose pill is like dried milk, vitamins may be used but more often it is a lactose pill because you don't want the vitamins making a difference.

I would not associated placebo with any mental effect because placebo's may or may not have a guaranteed placebo effect (people taking lactose seeing a benefit) or placebo may also have the reverse (people thinking they go the drug feel they get more side effects when they only got lactose pill).

Placebo can even be an action. If the study trial is looking at walking lowering blood pressure. Group A (treatment group) would be walk 30 mins. Placebo group would be, do not walk 30 mins.

So again, it is usually the "non-treatment" or "non change" comparison for a study looking at effects of something new.

"Placebo effect" is not the same as "placebo"

作者: timo1ee 時間: 2016-10-29 01:58 AM

Just to clarify, a placebo group or a placebo-controlled group is "a term used to describe a method of research in which an inactive substance (a placebo) is given to one group of participants", in order to be compared with other groups (independent variable). This term is most often used in the context of a psychological or social experiment.

作者: miru0909 時間: 2017-11-20 02:26 PM

Placebo is something that has no effect. It is done in experiments where one group will be given a new medicine and another group will be given a placebo. Each group will not know what they got so the people doing the experiment can determine what effect the medicine will cause when it is compared to someone who didn't take the medicine.

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