Assessing public support for extending smoke-free policies beyond enclosed public places and workplaces: protocol for a systematic review and meta-analysis 69 3 Sensitivity analysis Study findings may vary according to the risk-of-bias level of the individual studies. As a sensitivity analysis, we will exclude studies that scored no or can’t tell on at least one domain following the MMAT criteria. This criterion is based on MMAT evaluations in previous literature.39 Ethics No primary data collection will be undertaken; therefore, no formal ethical assessment and informed consent are required. Findings will be summarised in a single manuscript and will be disseminated through scientific literature. Timeline Start date: April 15th 2020 Finishing date: 31 May 2021
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