著者

吉里 恒昭 小川 慶太 丹生 聖治

出版者

一般社団法人日本心身医学会

雑誌

心身医学 (ISSN:03850307)

巻号頁・発行日

vol.46, no.12, 2006-12-01

著者

中野 重行 菅原 英世 坂本 真佐哉 小関 哲郎 上村 尚人 丹生 聖治 角南 由紀子 松木 俊二 梅月 恵美

出版者

The Japanese Society of Clinical Pharmacology and Therapeutics

雑誌

臨床薬理 (ISSN:03881601)

巻号頁・発行日

vol.30, no.1, pp.1-7, 1999-01-31 (Released:2010-06-28)

参考文献数

8

被引用文献数

5 5

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Objectives: A variety of factors influence the incidence of placebo effects . The purpose of this study was to clarify the influence of factors such as the doctor-patient relationship, patient's motivation and expectation for drug therapy on placebo effectsMethods: Data were obtained from two double-blind randomized clinical trials with a placebo control group of 123 patients with psychosomatic disorders. The improvement was assessed by doctors at two weeks after the initiation of treatment. The doctor-patient relationship, patient's motivation and expectation for drug therapy were assessed by doctors at the beginning of clinical trials.Results: The improvement rate in the placebo group was 42.3%, whereas the improvement rate in the diazepam group was 57.6% (p <0.05). In the placebo group, improvement rates were 50.0% in patients with a good doctor-patient relationship, 31.4% in patients with a moderate relationship and 10.0% in patients with a poor relationship (p < 0.05).Improvement rates were 46.1% in patients with a good motiva-tion for drug therapy and 19.0% in patients with poor or lack of motivation (p <0.01).Improvement rates were 36.4% in patients with low expectation for drug therapy, 53.0% in patients with a moderate one, and 7.7% in patients with high expectation (p <0.05).Conclusion: In patients with psychosomatic disorders, factors such as the doctor-patient relationship, patient's motivation and expectation for drug therapy clearly influ-ence the incidence of placebo effects.