Some Cochrane risk-of-bias items are not important in osteoarthritis trials: a meta-epidemiological study based on Cochrane reviews

Julie Bolvig, Carsten B Juhl, Isabelle Boutron, Peter Tugwell, Elizabeth A T Ghogomu, Jordi Pardo Pardo, Tamara Rader, George A Wells, Alain Mayhew, Lara Maxwell, Hans Lund, Henning Bliddal, Robin Christensen, Editorial Board of the Cochrane Musculoskeletal Group