PMID- 37577771 OWN - NLM STAT- MEDLINE DCOM- 20231102 LR - 20231102 IS - 1751-2980 (Electronic) IS - 1751-2972 (Linking) VI - 24 IP - 8-9 DP - 2023 Aug-Sep TI - Nocebo response intensity and influencing factors in the randomized clinical trials of functional dyspepsia: A systematic review and meta-analysis. PG - 440-451 LID - 10.1111/1751-2980.13216 [doi] AB - OBJECTIVES: In this study we aimed to evaluate the nocebo response rate in patients with functional dyspepsia (FD) and to explore its influencing factors. METHODS: A literature search of the EMBASE, PubMed, and Cochrane Library databases was conducted for all articles published up to March 2021. Randomized, parallel-designed, placebo-controlled trials on pharmacological interventions for patients with FD were included. A meta-analysis that utilized random effects to analyze the incidence of adverse events (AEs) among participants who were given placebo was conducted, and the correlation between trial characteristics and the magnitude of the nocebo response rate was analyzed. RESULTS: Altogether, 27 studies including 1866 paitents were deemed eligible and included in the analysis. The total nocebo response rate was 26% (95% confidence interval [CI] 18%-33%). The most frequently reported AEs included nasopharyngitis (9%), constipation (6%), headache (5%), and diarrhea (3%). There were significant differences in nocebo response rates among studies conducted in different country or region, treatment duration, types of medication, sponsorship and different versions of the Rome criteria used for FD diagnosis. While number of centers engaged in the study, types of FD diagnosis and dosing frequency were not significantly associated with the nocebo response rate. CONCLUSIONS: Patients with FD exhibit notable nocebo response strength in clinical trials. The researchers should adopt a more careful approach when analyzing the relationships between AEs and interventions in such trials. CI - (c) 2023 Chinese Medical Association Shanghai Branch, Chinese Society of Gastroenterology, Renji Hospital Affiliated to Shanghai Jiaotong University School of Medicine and John Wiley & Sons Australia, Ltd. FAU - Li, Rui Jie AU - Li RJ AD - Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China. FAU - Zhang, Qing Qing AU - Zhang QQ AD - Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China. FAU - Feng, Yu Qing AU - Feng YQ AD - Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China. FAU - Pei, Qiao Qiao AU - Pei QQ AD - Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China. FAU - He, Xuan Xuan AU - He XX AD - Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China. FAU - Chen, Fu Ping AU - Chen FP AD - Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China. FAU - Wang, Dong Ke AU - Wang DK AD - Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China. FAU - Liu, Xing Huang AU - Liu XH AD - Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China. FAU - Liu, Jin Song AU - Liu JS AD - Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China. FAU - Hou, Xiao Hua AU - Hou XH AD - Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China. FAU - Bai, Tao AU - Bai T AUID- ORCID: 0000-0001-9697-8510 AD - Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China. LA - eng GR - 8190034466/National Natural Science Foundation of China/ GR - 8187031677/National Natural Science Foundation of China/ GR - Undergraduate Innovation and Entrepreneurship Project of the First Clinical College of Huazhong University of Science and Technology/ PT - Journal Article PT - Meta-Analysis PT - Review PT - Systematic Review DEP - 20230920 PL - Australia TA - J Dig Dis JT - Journal of digestive diseases JID - 101302699 SB - IM MH - Humans MH - *Nocebo Effect MH - *Dyspepsia/drug therapy MH - Randomized Controlled Trials as Topic OTO - NOTNLM OT - drug-related side effects and adverse reactions OT - functional dyspepsia OT - meta-analysis OT - nocebo effect OT - systematic review EDAT- 2023/08/14 06:43 MHDA- 2023/08/14 06:44 CRDT- 2023/08/14 05:05 PHST- 2023/05/28 00:00 [revised] PHST- 2023/02/01 00:00 [received] PHST- 2023/08/07 00:00 [accepted] PHST- 2023/08/14 06:44 [medline] PHST- 2023/08/14 06:43 [pubmed] PHST- 2023/08/14 05:05 [entrez] AID - 10.1111/1751-2980.13216 [doi] PST - ppublish SO - J Dig Dis. 2023 Aug-Sep;24(8-9):440-451. doi: 10.1111/1751-2980.13216. Epub 2023 Sep 20.