So, we can say for sure that they work better than the dummytreatment, but not whether one product works better than another.
因此，我们可以肯定地说，它们比虚拟疗法更有效，但决不是说一个产品比另一个产品更有效。
2
Previous research has compared a product or pill with a placebo (a dummytreatment) rather than other smoking cessation products.
以前的研究是将一个产品或药物和安慰剂(一种虚拟疗法)相比较，而不是比较其它戒烟产品。
3
After taking orlistat for a year, most people lose about 8.1 kilograms (about 18 pounds). That's about 2.8 kilograms (6 pounds) more than people who take a dummytreatment (a placebo).