这项研究还发现，没有服用药片的病人中，62%有头疼症状，与之相比，得到治疗的其他三组中，只有不到50%的病人有头疼症状。

The study also found 62% of patients who didn't receive pills reported headaches compared with less than 50% of patients in the other three treatment groups.

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与之相比，那些母亲在怀孕期间吸烟，且每天少于10根者，大约有11%服用心理疾患药物。 而那些母亲在怀孕期间吸烟，且每天多于10根者，大约有14%服用心理疾患药物。

That compared to 11 percent of those whose mothers smoked fewer than 10 cigarettes per day, and close to 14 percent whose mothers had lit up more than 10 times a day.

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科学家们发现，即使病人被告之安慰剂中不含任何有效成分，给病人服用这种“无效药”对病情医治还是卓有成效。

Patients can benefit from being treated with sham drugs even if they are told they contain no active ingredient, scientists have found.

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