@article{discovery10134915,
           pages = {261--283},
          volume = {142},
            note = {This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions.},
       publisher = {Elsevier BV},
           title = {Causal analyses of existing databases: The importance of understanding what can be achieved with your data before analysis (commentary on Hern{\'a}n)},
            year = {2022},
         journal = {Journal of Clinical Epidemiology},
           month = {February},
        keywords = {Causal analysis, Sample size, Power, Meta-analysis, Planning},
             url = {https://doi.org/10.1016/j.jclinepi.2021.09.026},
          author = {Morris, TP and van Smeden, M}
}