Endgames Statistical question Study design BMJ 2009; 338 doi: https://doi.org/10.1136/bmj.b2381 (Published 17 June 2009) Cite this as: BMJ 2009;338:b2381 Article Related content Metrics Responses Peer review Related articles No related articles found. See more Units of sampling, observation, and analysis BMJ October 09, 2015, 351 h5396; DOI: https://doi.org/10.1136/bmj.h5396 Randomised controlled trials: understanding confounding BMJ September 25, 2015, 351 h5119; DOI: https://doi.org/10.1136/bmj.h5119 Understanding the ecological fallacy BMJ September 21, 2015, 351 h4773; DOI: https://doi.org/10.1136/bmj.h4773 How to read a funnel plot in a meta-analysis BMJ September 16, 2015, 351 h4718; DOI: https://doi.org/10.1136/bmj.h4718 Understanding the Hawthorne effect BMJ September 04, 2015, 351 h4672; DOI: https://doi.org/10.1136/bmj.h4672
