We, the Editor-in-Chief and Publishers of Current Medical Research and Opinion are retracting the following article:
Jun Iwamoto, Hideo Matsumoto & Tsuyoshi Takeda (2008) Efficacy of risedronate against hip fracture in patients with neurological diseases: a meta-analysis of randomized controlled trials, Current Medical Research and Opinion, 24:5, 1379-1384 http://dx.doi.org/10.1185/030079908X297321
Following a number of recent retractions of all four randomized controlled trials this meta-analysis is based on, the lead author of the underlying trials has taken full responsibility for the fraud, and requested their retraction. Concerns about the data integrity were originally raised by Bolland et. al. [Citation1] who used complex statistical methods that have been demonstrated as helping to uncover potentially fraudulent behavior on a large scale.
- Bolland MJ, Avenell A, Gamble GD, Grey A. Systematic review and statistical analysis of the integrity of 33 randomized controlled trials. Neurology 2016;87:2391–2402.