The UK Faculty of Public Health has recently taken ownership of the Health Knowledge resource. This new, advert-free website is still under development and there may be some issues accessing content. Additionally, the content has not been audited or verified by the Faculty of Public Health as part of an ongoing quality assurance process and as such certain material included maybe out of date. If you have any concerns regarding content you should seek to independently verify this.
We thought the answer was YES.
Good table with the quality criteria they assessed. They state in the methods that they exclude studies with quality less than 3 but they include them in the list of studies in Table 1 and 2. They don't explicitly assess quality of cross-over trials separately, particularly with the washout period problem and assessment of period effects.
