Incomplete reporting and spin in acupuncture randomised controlled trials: a cross-sectional meta-epidemiological study

Objectives To investigate the reporting, data sharing and spin (using reporting strategies to emphasise the benefit of non-significant results) in acupuncture randomised controlled trials (RCTs). Design Cross-sectional meta-epidemiological study. Data sources Eligible studies indexed in MEDLINE, Embase, CENTRAL, CBM, CNKI, Wanfang Data and VIP Database between 1 January 2014 and 1 May 2024. Eligibility criteria Peer-reviewed acupuncture RCTs used traditional medicine (TM), published in English or Chinese, two parallel arms for humans. Main outcome measures We assessed (1) the reporting of acupuncture RCTs by the Consolidated Standards for Reporting Trials (CONSORT) 2010 statement and STandards for Reporting Interventions in Clinical Trials of Acupuncture (STRICTA) checklist; (2) the data sharing level by the International Committee of Medical Journal Editors (ICMJE) data sharing statement; (3) spin frequency and level by the prespecified spin strategies. Results This study evaluated 476 eligible studies, of which 166 (34.9%) explored the specific efficacy or safety of acupuncture in the nervous system, 68 (14.3%) in the motor system and 61 (12.8%) in the digestive system. 244 (57.7%) studies used conventional acupuncture, 296 (62.2%) used multicentre study design and 369 (77.5%) were supported by institutional funding. 312 (65.5%) eligible studies were poorly reported. The sufficiently reporting scores of the CONSORT 2010 statement and the STRICTA checklist differed from 0.63% to 97.5%, and 32 (59.3%) items were less than 50%. For the data sharing level of acupuncture RCTs, only 66 (17.2%) studies followed the ICMJE data sharing statement, but 49 (14.5%) need to require authors to obtain data, and only 5 (1.5%) provided data by open access. Spins were identified in 408 (85.7%) studies (average spin frequencies: 2.94). 59 (37.2%) studies with non-significant primary outcomes had spin levels. Conclusions This study found that the reporting of acupuncture RCTs was low compliance with the CONSORT 2010 statement, the STRICTA checklist and the ICMJE data sharing statement, and spin appeared frequently. Journal policies on using reporting guidelines, data sharing and equitable consideration of non-significant results might enhance the reporting of acupuncture RCTs. Trial registration number This study was registered at the Open Science Framework (OSF): ( https://doi.org/10.17605/OSF.IO/2WTE6 , and https://doi.org/10.17605/OSF.IO/9XDN4 ,)